1. From the Department of Women’s and Children’s Health, Uppsala University, Sweden (L.B., P.N.-C., A.K.W., S.H., A.S.)
2. Department of Obstetrics and Gynecology, Institute of Clinical Science, Sahlgrenska Academy, University of Gothenburg, Sweden (L.B.)
3. School of Public Health, Oregon Health and Science University-Portland State University (J.M.S.)
4. Department of Obstetrics and Gynecology, Oregon Health and Science University, Portland (J.M.S., A.S.)
5. Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden (A.K.E.B., A.S.)