1. University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
2. Center for Women's Health Research and Innovation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
3. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA.
4. Magee-Womens Research Institute, Pittsburgh, Pennsylvania, USA.
5. Center for Research on Health Care, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
6. Center for Health Equity Research and Promotion, VA Pittsburgh Health Care System, Pittsburgh, Pennsylvania, USA.