| Affiliation: | 1. Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD;2. Department of Statistics, University of Haifa, Haifa, Israel;3. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD;4. Department of Obstetrics and Gynecology, University of Utah and Intermountain Healthcare, Salt Lake City, UT;5. Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY |
