Affiliation: | 1.Epidemiology Program, College of Public Health and Human Sciences, Oregon State University, 103 Milam Hall, Corvallis, OR, 97331, USA ;2.Department of Obstetrics and Gynecology, Carilion Clinic, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA ;3.Oregon Health and Science University-Portland State University School of Public Health, Portland, OR, USA ; |