B A Källén

Summary

Affiliation: Tornblad Institute
Country: Sweden

Publications

  1. ncbi request reprint Associated malformations in infants and fetuses with upper or lower neural tube defects
    B Kälién
    Tornblad Institute, University of Lund, Sweden
    Teratology 57:56-63. 1998
  2. ncbi request reprint Use of folic acid supplementation and risk for dizygotic twinning
    Bengt Kallen
    Tornblad Institute, University of Lund, Biskopsgatan 7, SE 223 62 Lund, Sweden
    Early Hum Dev 80:143-51. 2004
  3. ncbi request reprint Neonate characteristics after maternal use of antidepressants in late pregnancy
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Arch Pediatr Adolesc Med 158:312-6. 2004
  4. ncbi request reprint In vitro fertilization (IVF) in Sweden: risk for congenital malformations after different IVF methods
    Bengt Kallen
    Tornblad Institute, University of Lund, Biskopsgatan 7, SE 223 62 Lund, Sweden
    Birth Defects Res A Clin Mol Teratol 73:162-9. 2005
  5. pmc Temporal trends in multiple births after in vitro fertilisation in Sweden, 1982-2001: a register study
    Bengt Kallen
    Centre for Reproduction Epidemiology, Tornblad Institute, University of Lund, Biskopsgatan 7, S 223 62 Lund, Sweden
    BMJ 331:382-3. 2005
  6. ncbi request reprint Methodological issues in the epidemiological study of the teratogenicity of drugs
    Bengt A J Källén
    Center for Reproduction Epidemiology, Tornblad Institute, University of Lund, SE 223 62 Lund, Sweden
    Congenit Anom (Kyoto) 45:44-51. 2005
  7. ncbi request reprint Is erythromycin therapy teratogenic in humans?
    Bengt A J Källén
    Tornblad Institute, Lund University, Biskospgatan 7, SE 22362 Lund, Sweden
    Reprod Toxicol 20:209-14. 2005
  8. ncbi request reprint The epidemiology of anophthalmia and microphthalmia in Sweden
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Eur J Epidemiol 20:345-50. 2005
  9. ncbi request reprint In vitro fertilization in Sweden: child morbidity including cancer risk
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Fertil Steril 84:605-10. 2005
  10. ncbi request reprint Maternal drug use, fertility problems, and infant craniostenosis
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Cleft Palate Craniofac J 42:589-93. 2005

Collaborators

Detail Information

Publications24

  1. ncbi request reprint Associated malformations in infants and fetuses with upper or lower neural tube defects
    B Kälién
    Tornblad Institute, University of Lund, Sweden
    Teratology 57:56-63. 1998
    ..These findings together with other epidemiological data support the idea that upper and lower neural tube defects may have different significance in epidemiological studies and should be treated separately...
  2. ncbi request reprint Use of folic acid supplementation and risk for dizygotic twinning
    Bengt Kallen
    Tornblad Institute, University of Lund, Biskopsgatan 7, SE 223 62 Lund, Sweden
    Early Hum Dev 80:143-51. 2004
    ..An increase in dizygotic twinning rate after folic acid supplementation has previously been described, but in a recent study from China, no such effect was seen...
  3. ncbi request reprint Neonate characteristics after maternal use of antidepressants in late pregnancy
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Arch Pediatr Adolesc Med 158:312-6. 2004
    ..Exposure to antidepressants during the third trimester of pregnancy has been associated with an increased risk for adverse birth outcomes, including preterm birth, respiratory distress, and hypoglycemia...
  4. ncbi request reprint In vitro fertilization (IVF) in Sweden: risk for congenital malformations after different IVF methods
    Bengt Kallen
    Tornblad Institute, University of Lund, Biskopsgatan 7, SE 223 62 Lund, Sweden
    Birth Defects Res A Clin Mol Teratol 73:162-9. 2005
    ..This population based study is aimed at analyzing the presence of congenital malformations in a large group of infants born after IVF and to compare malformation risk both with that of all infants born and according to IVF method used...
  5. pmc Temporal trends in multiple births after in vitro fertilisation in Sweden, 1982-2001: a register study
    Bengt Kallen
    Centre for Reproduction Epidemiology, Tornblad Institute, University of Lund, Biskopsgatan 7, S 223 62 Lund, Sweden
    BMJ 331:382-3. 2005
  6. ncbi request reprint Methodological issues in the epidemiological study of the teratogenicity of drugs
    Bengt A J Källén
    Center for Reproduction Epidemiology, Tornblad Institute, University of Lund, SE 223 62 Lund, Sweden
    Congenit Anom (Kyoto) 45:44-51. 2005
    ..Nearly every finding of a risk increase, if not extremely strong, should only be regarded as a tentative signal to be tested in independent studies...
  7. ncbi request reprint Is erythromycin therapy teratogenic in humans?
    Bengt A J Källén
    Tornblad Institute, Lund University, Biskospgatan 7, SE 22362 Lund, Sweden
    Reprod Toxicol 20:209-14. 2005
    ..Potent blocking drugs cause as a class effect cardiac defects in animal experiments...
  8. ncbi request reprint The epidemiology of anophthalmia and microphthalmia in Sweden
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Eur J Epidemiol 20:345-50. 2005
    ..Maternal smoking in early pregnancy seemed to increase the risk for anophthalmia or microphthalmia in the absence of a coloboma...
  9. ncbi request reprint In vitro fertilization in Sweden: child morbidity including cancer risk
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Fertil Steril 84:605-10. 2005
    ..To study long-term morbidity among children conceived by IVF...
  10. ncbi request reprint Maternal drug use, fertility problems, and infant craniostenosis
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Cleft Palate Craniofac J 42:589-93. 2005
    ..To test the hypothesis that maternal drug use or treatment for infertility is related to the occurrence of infant craniostenosis...
  11. ncbi request reprint In vitro fertilization in Sweden: maternal characteristics
    Bengt Kallen
    Tornblad Institute, University of Lund, Biskopsgatan 7, SE 223 62 Lund, Sweden
    Acta Obstet Gynecol Scand 84:1185-91. 2005
    ..Deliveries among women who had an in vitro fertilization (IVF) are characterized by increased risks for both the mother and the infant/child. Part of these effects may be due to maternal characteristics...
  12. ncbi request reprint Valproic acid is known to cause hypospadias in man but does not reduce anogenital distance or causes hypospadias in rats
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Basic Clin Pharmacol Toxicol 94:51-4. 2004
    ..The mechanism through which valproic acid causes hypospadias in man and affects testicular development in rat is unknown. Hypospadias caused by valproic acid in man is apparently not due to anti-androgenic properties of the drug...
  13. ncbi request reprint Maternal drug use and infant cleft lip/palate with special reference to corticoids
    Bengt Kallen
    Tornblad Institute, University of Lund, Sweden
    Cleft Palate Craniofac J 40:624-8. 2003
    ..To study the association between maternal drug use in early pregnancy and orofacial cleft in the infant...
  14. ncbi request reprint Congenital malformations after the use of inhaled budesonide in early pregnancy
    B Kallen
    Tornblad Institute, and the Department of Obstetrics and Gynecology, University of Lund, Sweden
    Obstet Gynecol 93:392-5. 1999
    ..To study possible teratogenic risks with the use of an inhaled glucocorticoid, budesonide, in early pregnancy...
  15. ncbi request reprint Asthma during pregnancy--a population based study
    B Kallen
    Tornblad Institute, Lund, Sweden
    Eur J Epidemiol 16:167-71. 2000
    ..An association with preeclampsia, gestational diabetes, and infant hypoglycemia was verified. Maternal asthma appears to be a risk factor for preterm and postterm births and increases the risk for some pregnancy complications...
  16. ncbi request reprint Drinking water chlorination and delivery outcome-a registry-based study in Sweden
    B A Källén
    Tornblad Institute, University of Lund, S 223 62, Lund, Sweden
    Reprod Toxicol 14:303-9. 2000
    ..Because the exposure information in this study was based on the chlorination method and not the amount of byproducts in the water, the general lack of significant effects could be due to a low concentration of such byproducts...
  17. ncbi request reprint Use of omeprazole during pregnancy--no hazard demonstrated in 955 infants exposed during pregnancy
    B A Källén
    Tornblad Institute, University of Lund, Biskopsgatan 7, S 223 63, Lund, Sweden
    Eur J Obstet Gynecol Reprod Biol 96:63-8. 2001
    ..To evaluate the magnitude of possible fetal risks involved in maternal use of omeprazole during pregnancy...
  18. ncbi request reprint Use of folic acid and delivery outcome: a prospective registry study
    Bengt A J Källén
    Tornblad Institute, University of Lund, Lund, Sweden
    Reprod Toxicol 16:327-32. 2002
    ..Our results support the scepticism recently expressed in the literature on the beneficial effect of folic acid in preventing congenital malformations, especially of a non-neural tube defect type...
  19. ncbi request reprint Neonatal outcome in pregnancies from ovarian stimulation
    B Kallen
    Tornblad Institute, University of Lund, Sweden
    Obstet Gynecol 100:414-9. 2002
    ..The outcomes studied were multiple birth, preterm birth, and low birth weight among singletons, congenital malformations, and infant death...
  20. ncbi request reprint Maternal drug use in early pregnancy and infant cardiovascular defect
    Bengt A J Källén
    Center of Reproduction Epidemiology, Tornblad Institute, University of Lund, Biskopsgatan 7, SE 223 62, Lund, Sweden
    Reprod Toxicol 17:255-61. 2003
    ..Some of these associations are probably due to confounding from underlying disease or complaint, some may be due to multiple testing, some may be true drug effects. Further studies are needed to verify or reject these associations...
  21. ncbi request reprint Delivery outcome after the use of meclozine in early pregnancy
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Eur J Epidemiol 18:665-9. 2003
    ..If anything, delivery outcome is better than expected when the mother used meclozine. These beneficial effects are probably secondary to NVP. Meclozine can apparently be used without risk at this condition...
  22. ncbi request reprint Relationship between vitamin use, smoking, and nausea and vomiting of pregnancy
    Bengt Kallen
    Tornblad Institute, University of Lund, Lund, Sweden
    Acta Obstet Gynecol Scand 82:916-20. 2003
    ..Nausea and vomiting in pregnancy (NVP) is a common complaint but risk factors for NVP are not well characterized...
  23. ncbi request reprint Use of oral decongestants during pregnancy and delivery outcome
    Bengt A J Källén
    Tornblad Institute, University of Lund, Lund, Sweden
    Am J Obstet Gynecol 194:480-5. 2006
    ..The purpose of this study was to evaluate delivery outcome after maternal use of oral decongestants...
  24. ncbi request reprint A modified method for the epidemiological analysis of registry data on infants with multiple malformations
    K B Källén
    Tornblad Institute, University of Lund, Sweden
    Int J Epidemiol 28:701-10. 1999
    ..Various methods for the analysis of multimalformed infants have been tried...