Published on in Vol 9, No 6 (2020): June
1 Department of Epidemiology, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, United States
2 Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
3 Magee-Womens Research Institute, Pittsburgh, PA, United States
4 RAND Health Care, Santa Monica, CA, United States
5 Department of Behavioral and Community Health Sciences, University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA, United States
6 Department of Obstetrics and Gynaecology, University of British Columbia, Vancouver, BC, Canada