Alexandros N Vgontzas

Summary

Affiliation: Pennsylvania State University
Country: USA

Publications

  1. ncbi request reprint Plasma interleukin 6 levels are elevated in polycystic ovary syndrome independently of obesity or sleep apnea
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry H073, Penn State University College of Medicine, Hershey, PA 17033, USA
    Metabolism 55:1076-82. 2006
  2. ncbi request reprint Does obesity play a major role in the pathogenesis of sleep apnoea and its associated manifestations via inflammation, visceral adiposity, and insulin resistance?
    Alexandros N Vgontzas
    Department of Psychiatry, Sleep Research and Treatment Center, Hershey, PA 17033, USA
    Arch Physiol Biochem 114:211-23. 2008
  3. pmc Insomnia with objective short sleep duration is associated with deficits in neuropsychological performance: a general population study
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 33:459-65. 2010
  4. pmc Insomnia with objective short sleep duration: the most biologically severe phenotype of the disorder
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep Med Rev 17:241-54. 2013
  5. pmc Persistent insomnia: the role of objective short sleep duration and mental health
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
    Sleep 35:61-8. 2012
  6. doi request reprint Short sleep duration and obesity: the role of emotional stress and sleep disturbances
    A N Vgontzas
    Department of Psychiatry, Sleep Research and Treatment Center, Penn State University College of Medicine, Hershey, PA 17033, USA
    Int J Obes (Lond) 32:801-9. 2008
  7. ncbi request reprint Hypothalamic-pituitary-adrenal axis activity in obese men with and without sleep apnea: effects of continuous positive airway pressure therapy
    A N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, H073, Penn State University College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, USA
    J Clin Endocrinol Metab 92:4199-207. 2007
  8. ncbi request reprint Obesity and sleep disturbances: meaningful sub-typing of obesity
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, PA 17033, USA
    Arch Physiol Biochem 114:224-36. 2008
  9. ncbi request reprint Obesity-related sleepiness and fatigue: the role of the stress system and cytokines
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, Pennsylvania 17033, USA
    Ann N Y Acad Sci 1083:329-44. 2006
  10. pmc Insomnia with objective short sleep duration is associated with a high risk for hypertension
    Alexandros N Vgontzas
    Sleep Research and Treatment Center Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 32:491-7. 2009

Collaborators

Detail Information

Publications56

  1. ncbi request reprint Plasma interleukin 6 levels are elevated in polycystic ovary syndrome independently of obesity or sleep apnea
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry H073, Penn State University College of Medicine, Hershey, PA 17033, USA
    Metabolism 55:1076-82. 2006
    ..We conclude that IL-6 levels are elevated in obese women with PCOS independently of obesity or sleep apnea and may represent a pathophysiologic link to insulin resistance...
  2. ncbi request reprint Does obesity play a major role in the pathogenesis of sleep apnoea and its associated manifestations via inflammation, visceral adiposity, and insulin resistance?
    Alexandros N Vgontzas
    Department of Psychiatry, Sleep Research and Treatment Center, Hershey, PA 17033, USA
    Arch Physiol Biochem 114:211-23. 2008
    ..g. hypofunctioning hypothalamic CRH, play a major role in the pathogenesis of sleep apnoea, sleepiness, and the associated cardiovascular co-morbidities...
  3. pmc Insomnia with objective short sleep duration is associated with deficits in neuropsychological performance: a general population study
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 33:459-65. 2010
    ..To examine the joint effect of insomnia and objective short sleep duration on neuropsychological performance...
  4. pmc Insomnia with objective short sleep duration: the most biologically severe phenotype of the disorder
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep Med Rev 17:241-54. 2013
    ....
  5. pmc Persistent insomnia: the role of objective short sleep duration and mental health
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
    Sleep 35:61-8. 2012
    ..Furthermore, none of these studies have examined the role of polysomnographic (PSG) variables such as sleep duration or sleep apnea on the persistence of insomnia...
  6. doi request reprint Short sleep duration and obesity: the role of emotional stress and sleep disturbances
    A N Vgontzas
    Department of Psychiatry, Sleep Research and Treatment Center, Penn State University College of Medicine, Hershey, PA 17033, USA
    Int J Obes (Lond) 32:801-9. 2008
    ..How the degree of obesity or other clinical characteristics of the obese individuals, such as sleep disturbances or emotional stress, define this relation is not known...
  7. ncbi request reprint Hypothalamic-pituitary-adrenal axis activity in obese men with and without sleep apnea: effects of continuous positive airway pressure therapy
    A N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, H073, Penn State University College of Medicine, 500 University Drive, Hershey, Pennsylvania 17033, USA
    J Clin Endocrinol Metab 92:4199-207. 2007
    ..Previous studies on the association between the hypothalamic-pituitary-adrenal axis activity and sleep apnea (SA) and obesity are inconsistent and/or limited...
  8. ncbi request reprint Obesity and sleep disturbances: meaningful sub-typing of obesity
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, PA 17033, USA
    Arch Physiol Biochem 114:224-36. 2008
    ..This proposed sub-typing may lead to novel, preventive and therapeutic strategies for obesity and its associated sleep disturbances...
  9. ncbi request reprint Obesity-related sleepiness and fatigue: the role of the stress system and cytokines
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, Pennsylvania 17033, USA
    Ann N Y Acad Sci 1083:329-44. 2006
    ....
  10. pmc Insomnia with objective short sleep duration is associated with a high risk for hypertension
    Alexandros N Vgontzas
    Sleep Research and Treatment Center Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 32:491-7. 2009
    ..To examine the joint effect of insomnia and objective short sleep duration on hypertension risk...
  11. pmc Insomnia with objective short sleep duration is associated with type 2 diabetes: A population-based study
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
    Diabetes Care 32:1980-5. 2009
    ..We examined the joint effects of insomnia and objective short sleep duration, the combination of which is associated with higher morbidity, on diabetes risk...
  12. pmc Insomnia with short sleep duration and mortality: the Penn State cohort
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 33:1159-64. 2010
    ..Because insomnia with objective short sleep duration is associated with increased morbidity, we examined the effects of this insomnia subtype on all-cause mortality...
  13. doi request reprint Selective effects of CPAP on sleep apnoea-associated manifestations
    A N Vgontzas
    Penn State University College of Medicine, Department of Psychiatry, Hershey, PA 17033, USA
    Eur J Clin Invest 38:585-95. 2008
    ..The objectives of this study are to simultaneously test these associations at baseline and after 3 months of continuous positive airway pressure (CPAP) therapy...
  14. pmc Effects of recovery sleep after one work week of mild sleep restriction on interleukin-6 and cortisol secretion and daytime sleepiness and performance
    Slobodanka Pejovic
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University, College of Medicine, Hershey, Pennsylvania
    Am J Physiol Endocrinol Metab 305:E890-6. 2013
    ..The long-term effects of a repeated sleep restriction/sleep recovery weekly cycle in humans remain unknown...
  15. pmc Sleep disordered breathing in children in a general population sample: prevalence and risk factors
    Edward O Bixler
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State University College of Medicine, Hershey, PA 17033, USA
    Sleep 32:731-6. 2009
    ..Assess the prevalence based on clinically meaningful criteria (i.e., blood pressure) and identify risk factors of sleep disordered breathing (SDB) in a representative sample of elementary school children...
  16. pmc Prevalence and risk factors of excessive daytime sleepiness in a community sample of young children: the role of obesity, asthma, anxiety/depression, and sleep
    Susan L Calhoun
    Sleep Research and Treatment Center, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 34:503-7. 2011
    ..Few studies have researched the prevalence and predictors of EDS in young children, none in a general population sample of children, and the results are inconsistent...
  17. pmc Sleep-disordered breathing in children is associated with impairment of sleep stage-specific shift of cardiac autonomic modulation
    Duanping Liao
    Department of Public Health Sciences, Penn State University College of Medicine, Hershey, PA 17033, USA
    J Sleep Res 19:358-65. 2010
    ....
  18. pmc Insulin resistance and circadian rhythm of cardiac autonomic modulation
    Sol M Rodriguez-Colon
    Department of Public Health Sciences, Penn State University College of Medicine, 600 Centerview Dr, Suite 2200, A210, Hershey, PA, USA
    Cardiovasc Diabetol 9:85. 2010
    ..Therefore, we conducted this investigation to exam the association between IR and the circadian oscillations of CAM in a community-dwelling middle-aged sample...
  19. pmc Clinical and polysomnographic predictors of the natural history of poor sleep in the general population
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA, USA
    Sleep 35:689-97. 2012
    ..e., poor sleep). However, few longitudinal studies have examined risk factors of the natural history of poor sleep, and none have examined the role of polysomnographic (PSG) variables...
  20. pmc Risk factors for incident chronic insomnia: a general population prospective study
    Ravi Singareddy
    Sleep Research and Treatment Center, Penn State University College of Medicine, Hershey, PA, United States
    Sleep Med 13:346-53. 2012
    ..We prospectively examined the associations between demographics, behavioral factors, psychiatric and medical disorders, and polysomnography with incident chronic insomnia...
  21. pmc Insomnia with objective short sleep duration and incident hypertension: the Penn State Cohort
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Pennylvania State University College of Medicine, Department of Psychiatry H073, 500 University Dr, Hershey, PA 17033, USA
    Hypertension 60:929-35. 2012
    ..Objective short sleep duration in insomnia may serve as a useful predictor of the biological severity of the disorder...
  22. pmc Medical complaints are more common in young school-aged children with parent reported insomnia symptoms
    Ravi Singareddy
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, PA 17033, USA
    J Clin Sleep Med 5:549-53. 2009
    ..In this study, we examined prevalence of medical complaints in children with insomnia symptoms in a large general population of school aged children...
  23. pmc Sleep is increased by weight gain and decreased by weight loss in mice
    Zhiwei Guan
    Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    Sleep 31:627-33. 2008
    ..To determine whether weight loss could reverse excessive sleep in high-fat diet-induced obesity...
  24. pmc Sleep misperception and chronic insomnia in the general population: role of objective sleep duration and psychological profiles
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Penn State University College of Medicine, 500 University Drive, Hershey, PA 17033, USA
    Psychosom Med 73:88-97. 2011
    ..The frequency and the determinants of sleep misperception in general population samples are unknown...
  25. pmc Systemic inflammation and circadian rhythm of cardiac autonomic modulation
    Xian Li
    Department of Public Health Sciences, Penn State University College of Medicine, 600 Centerview Drive, Hershey, PA 17033, USA
    Auton Neurosci 162:72-6. 2011
    ..86 (0.38) ms, respectively, both p-values <0.05]. SI is adversely associated with circadian pattern of CAM, suggesting that the cardiac risk associated with SI may be partially mediated via inflammation-related changes in CAM...
  26. pmc Learning, attention/hyperactivity, and conduct problems as sequelae of excessive daytime sleepiness in a general population study of young children
    Susan L Calhoun
    Sleep Research and Treatment Center, Pennsylvania State University College of Medicine, Hershey, PA, USA
    Sleep 35:627-32. 2012
    ..We investigated the association of EDS with objective neurocognitive measures and parent reported learning, attention/hyperactivity, and conduct problems in a large general population sample of children...
  27. pmc Blood pressure associated with sleep-disordered breathing in a population sample of children
    Edward O Bixler
    Department of Psychiatry, Penn State University College of Medicine, Sleep Research and Treatment Center, Hershey, PA 17033, USA
    Hypertension 52:841-6. 2008
    ..Clinically, the data support the threshold of AHI >or=5 for the initiation of treatment for SDB. Additional research is indicated to assess the efficacy of SDB treatment on reducing blood pressure...
  28. pmc Prenatal and perinatal complications: is it the link between race and SES and childhood sleep disordered breathing?
    Susan L Calhoun
    Sleep Research and Treatment Center, Penn State University, College of Medicine, Hershey, PA, USA
    J Clin Sleep Med 6:264-9. 2010
    ....
  29. pmc Women sleep objectively better than men and the sleep of young women is more resilient to external stressors: effects of age and menopause
    Edward O Bixler
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, PA 17033, USA
    J Sleep Res 18:221-8. 2009
    ..This gender dimorphism in sleep regulation may have been to protect women from the demands of infant and child care, and in part, might contribute to women's lower cardiovascular risks and greater longevity...
  30. pmc Leptin and hunger levels in young healthy adults after one night of sleep loss
    Slobodanka Pejovic
    Sleep Research and Treatment Center, Department of Psychiatry, Penn State College of Medicine, Hershey, PA 17033, USA
    J Sleep Res 19:552-8. 2010
    ....
  31. pmc Subjective and objective sleep and self-harm behaviors in young children: a general population study
    Ravi Singareddy
    Sleep Research and Treatment Center, Penn State University College of Medicine, Hershey, PA, USA Electronic address
    Psychiatry Res 209:549-53. 2013
    ..These data indicate that parent reported sleep disturbances are independently associated with SHB. It is possible that higher REM-sleep is a non-invasive biomarker for risk of self-harm behaviors in young children...
  32. pmc Lack of regular exercise, depression, and degree of apnea are predictors of excessive daytime sleepiness in patients with sleep apnea: sex differences
    Maria Basta
    Sleep Research and Treatment Center, Department of Psychiatry, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA
    J Clin Sleep Med 4:19-25. 2008
    ..Exercise is beneficial for apnea, depression, and metabolic abnormalities; however, its association with EDS is not known...
  33. doi request reprint The Spanish version of the Insomnia Severity Index: a confirmatory factor analysis
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Department of Psychiatry, College of Medicine, Penn State University, Hershey, PA 17033, USA
    Sleep Med 13:207-10. 2012
    ..To examine the psychometric properties of the Spanish version of the Insomnia Severity Index (ISI) and to determine its factor structure with confirmatory factor analysis (CFA)...
  34. pmc Obesity is associated with impaired cardiac autonomic modulation in children
    Sol M Rodriguez-Colon
    Department of Public Health Sciences, Penn State University College of Medicine, Hershey, PA 17033, USA
    Int J Pediatr Obes 6:128-34. 2011
    ..To examine the cross-sectional association between measurements of obesity and subclinical impairment of cardiac autonomic modulation (CAM) in a population-based sample of children...
  35. doi request reprint Sleep apnoea and visceral adiposity in middle-aged male and female subjects
    Ilia Kritikou
    Dept of Psychiatry, Pennsylvania State University College of Medicine, PA, USA
    Eur Respir J 41:601-9. 2013
    ..Short-term CPAP treatment does not affect general, abdominal or intra-hepatic adiposity...
  36. pmc ADHD subtypes and comorbid anxiety, depression, and oppositional-defiant disorder: differences in sleep problems
    Susan Dickerson Mayes
    Department of Psychiatry, Milton S Hershey Medical Center, PO Box 850, Hershey, PA 17033, USA
    J Pediatr Psychol 34:328-37. 2009
    ..Sleep problems were analyzed in children with ADHD (Attention-deficit hyperactivity disorder)...
  37. ncbi request reprint Sleep apnea is a manifestation of the metabolic syndrome
    Alexandros N Vgontzas
    Department of Psychiatry H073, Penn State College of Medicine, 500 University Drive, Hershey, PA 17033, USA
    Sleep Med Rev 9:211-24. 2005
    ....
  38. ncbi request reprint Impaired nighttime sleep in healthy old versus young adults is associated with elevated plasma interleukin-6 and cortisol levels: physiologic and therapeutic implications
    Alexandros N Vgontzas
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
    J Clin Endocrinol Metab 88:2087-95. 2003
    ....
  39. ncbi request reprint Insomnia symptoms, objective sleep duration and hypothalamic-pituitary-adrenal activity in children
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA, USA
    Eur J Clin Invest 44:493-500. 2014
    ..The objective of this study is to examine the association between parent-reported insomnia symptoms, objective short sleep duration and cortisol levels in a population-based sample of school-aged children...
  40. pmc Sleep-disordered breathing in obese children is associated with prevalent excessive daytime sleepiness, inflammation, and metabolic abnormalities
    Marina Tsaoussoglou
    Department of Psychiatry, Sleep Research and Treatment Center, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033, USA
    J Clin Endocrinol Metab 95:143-50. 2010
    ..In this study, we examined the joint effect of SDB and obesity in EDS as well as proinflammatory and metabolic markers...
  41. pmc No relationship between neurocognitive functioning and mild sleep disordered breathing in a community sample of children
    Susan L Calhoun
    Sleep Research and Treatment Center, Pennsylvania State University College of Medicine, Hershey, PA, USA
    J Clin Sleep Med 5:228-34. 2009
    ....
  42. ncbi request reprint Insomnia and its impact on physical and mental health
    Julio Fernandez-Mendoza
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, 500 University Drive H073, Hershey, PA, 17033, USA
    Curr Psychiatry Rep 15:418. 2013
    ..We propose that objective measures of sleep duration may become part of the routine evaluation and diagnosis of insomnia, and that these two insomnia phenotypes may respond differentially to biological versus psychological treatments. ..
  43. pmc Acute effects of fine particulate air pollution on ST segment height: a longitudinal study
    Fan He
    Department of Public Health Sciences, Penn State University College of Medicine, A210, 600 Centerview Dr, Suite 2200, Hershey, PA 17033, USA
    Environ Health 9:68. 2010
    ..The mechanisms for the relationship between particulate air pollution and cardiac disease are not fully understood. Air pollution-induced myocardial ischemia is one of the potentially important mechanisms...
  44. ncbi request reprint Sleep is increased in mice with obesity induced by high-fat food
    Joe B Jenkins
    Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, Room C5654, 500 University Drive, PA 17033, USA
    Physiol Behav 87:255-62. 2006
    ..These results indicate that the obese animals have increased sleep pressure and difficulties in maintaining wakefulness during the active phase...
  45. pmc Sleep-disordered breathing and cardiac autonomic modulation in children
    Duanping Liao
    Department of Public Health Sciences, Penn State University College of Medicine, Hershey, PA 17033, USA
    Sleep Med 11:484-8. 2010
    ..To investigate the adverse cardiac autonomic effects of sleep-disordered breathing (SDB) in a large population-based sample and a clinical sample of children...
  46. doi request reprint Prevalence of insomnia symptoms in a general population sample of young children and preadolescents: gender effects
    Susan L Calhoun
    Sleep Research and Treatment Center, Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA, United States Electronic address
    Sleep Med 15:91-5. 2014
    ..Our population-based study examined the prevalence of insomnia symptoms and its sociodemographic, subjective, and polysomnographic (PSG) sleep risk factors in young and preadolescent children...
  47. doi request reprint Nonsignificance of sleep relative to IQ and neuropsychological scores in predicting academic achievement
    Susan Dickerson Mayes
    Department of Psychiatry, Penn State College of Medicine, Hershey, Pennsylvania 17033, USA
    J Dev Behav Pediatr 29:206-12. 2008
    ..The goal of the study was to determine the relative importance of sleep, IQ, neuropsychological, and attention-deficit/hyperactivity disorder (ADHD) scores in predicting academic achievement...
  48. ncbi request reprint Interleukin-6 levels fluctuate with the light-dark cycle in the brain and peripheral tissues in rats
    Zhiwei Guan
    Department of Psychiatry, Pennsylvania State University College of Medicine, Hershey, PA 10733, USA
    Brain Behav Immun 19:526-9. 2005
    ....
  49. ncbi request reprint Sleep, the hypothalamic-pituitary-adrenal axis, and cytokines: multiple interactions and disturbances in sleep disorders
    Alexandros N Vgontzas
    Department of Psychiatry, Pennsylvania State University, College of Medicine, H073 500 University Dr, Hershey, PA 17033, USA
    Endocrinol Metab Clin North Am 31:15-36. 2002
    ..Sleep deprivation leads to sleepiness and daytime hypersecretion of IL-6. Combined, these findings suggest that the HPA axis stimulates arousal, while IL-6 and TNF-alpha are possible mediators of excessive daytime sleepiness in humans...
  50. ncbi request reprint Neuroendocrine aspects of chronic fatigue syndrome
    Dimitris A Papanicolaou
    Department of Medicine Endocrinology, Emory University, Atlanta, GA, USA
    Neuroimmunomodulation 11:65-74. 2004
    ..This paper represents the consensus of the panel of experts who participated in this meeting...
  51. pmc Cardiac implications of increased arterial entry and reversible 24-h central and peripheral norepinephrine levels in melancholia
    Philip W Gold
    Clinical Neuroendocrinology Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD 20892 1284, USA
    Proc Natl Acad Sci U S A 102:8303-8. 2005
    ..Even mildly-to-moderately depressed melancholic patients had clinically relevant increases in the arterial NE-appearance rate. These findings will not apply to all clinical subtypes of major depression...
  52. ncbi request reprint Metabolic abnormalities in obesity and sleep apnea are in a continuum
    Maria Basta
    Sleep Med 8:5-7. 2007
  53. ncbi request reprint The diagnosis and treatment of chronic insomnia in adults
    Alexandros N Vgontzas
    Sleep 28:1047-8. 2005
  54. doi request reprint Insomnia and sleep quality among primary care physicians with low and high burnout levels
    Antonio Vela-Bueno
    Department of Psychiatry, School of Medicine, Autonomous University of Madrid, Spain
    J Psychosom Res 64:435-42. 2008
    ..The aim of this study was to assess insomnia and sleep quality in primary care physicians with low and high burnout scores...
  55. ncbi request reprint Complexity and non-linear description of diurnal cortisol and growth hormone secretory patterns before and after sleep deprivation
    Ioannis Ilias
    Endocrine Unit, Evgenidion Hospital, University of Athens, Athens, Greece
    Endocr Regul 36:63-72. 2002
    ....
  56. ncbi request reprint Board Review Corner: the case of the sleepy middle-aged woman
    Alexandros N Vgontzas
    J Clin Sleep Med 3:85; author reply 86. 2007