1. Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
2. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, Pittsburgh, PA, USA
3. Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA, USA
4. Department of Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA, USA
5. School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
6. Department of Psychiatry, University of Rochester Medical Center, Rochester, NY, USA
7. Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, USA
8. Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, NY, USA
9. Department of Biostatistics and Epidemiology, Rutgers School of Public Health, Piscataway, NJ, USA
10. Department of Microbiology and Immunology, Center for Metabolic Disease Research, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
11. MRC Centre for Reproductive Health, The University of Edinburgh, Queens Medical Research Institute, Edinburgh, UK