| Affiliation: | (1) Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, P.O. Box 12233, Mail Drop A3-05, Durham, NC 27709, USA;(2) Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway;(3) Diabetes Research Centre, Aker and Ulleval University Hospitals, Oslo, Norway;(4) Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway;(5) Medical Birth Registry of Norway, Norwegian Institute of Public Health, Bergen, Norway |
