1. School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA
2. Magee-Womens Research Institute and Foundation, University of Pittsburgh, Pittsburgh, PA, USA
3. Center for Research and Evaluation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
4. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA, USA
5. Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA, USA
6. Clinical and Translational Research Institute, University of Pittsburgh, Pittsburgh, PA, USA