1. Department of Health Promotion and Development, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
2. Department of Human Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
3. Division of Internal Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
4. Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
5. Department of Obstetrics, Gynecology, & Reproductive Sciences, University of Pittsburgh, Pittsburgh, USA
6. Magee-Womens Research Institute, Pittsburgh, Pennsylvania, USA
7. Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
8. Global Pregnancy Collaboration, Pittsburgh, Pennsylvania, USA
9. Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
10. Department of Biostatistics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA