[1] NCI,Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics
[2] Oslo University Hospital,Women and Children’s Division, Department of Gynecology and Obstetrics
[3] Ullevål,Clinical and Epidemiologic Research Laboratory, Department of Laboratory Medicine
[4] Boston Children’s Hospital,Deparments of Medicine, Obstetrics and Gynecology, Center for Vascular Biology, Beth Israel Deaconess Medical Center
[5] Harvard Medical School,Epidemiology and Biostatistics Program, Division of Cancer Epidemiology and Genetics
[6] National Cancer Institute,undefined