| Authors: |
Søgaard AJ; Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway., Omsland TK; Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.; Department of Community Medicine, Institute of Health and Society, University of Oslo, Oslo, Norway., Holvik K; Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway., Tell GS; Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.; Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway., Dahl C; Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway., Schei B; Department of Public Health, Faculty of Medicine, Norwegian University of Science and Technology, Trondheim, Norway.; Department of Obstetrics and Gynecology, St. Olav's University Hospital, Trondheim, Norway., Meyer HE; Division of Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.; Department of Community Medicine, Institute of Health and Society, University of Oslo, Oslo, Norway. |
