| Gary S Richardson Circadian phase-shifting effects of repeated ramelteon administration in healthy adultsGary S Richardson Henry Ford Hospital, Sleep Center, 2799 West Grand Blvd, CFP 3, Detroit, MI 48202, USA J Clin Sleep Med 4:456-61. 2008 Safety and subjective sleep effects of ramelteon administration in adults and older adults with chronic primary insomnia: a 1-year, open-label studyGary S Richardson Henry Ford Hospital, Sleep Disorders Center, Detroit, MI 48202, USA J Clin Psychiatry 70:467-76. 2009 Human physiological models of insomniaGary S Richardson Sleep Research Laboratory, Henry Ford Hospital, Detroit, MI, USA Sleep Med 8:S9-14. 2007 The human circadian system in normal and disordered sleepGary S Richardson Division of Sleep Medicine, Henry Ford Hospital, Detroit, MI 48202, USA J Clin Psychiatry 66:3-9; quiz 42-3. 2005 Epidemiology of insomnia and the need for diagnosis and treatmentGary S Richardson Sleep Disorders and Research Center, Henry Ford Hospital Sleep Center, Detroit, MI 48202, USA Postgrad Med 116:14-8. 2004
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