1. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania
2. Department of Obstetrics and Gynecology, University Hospitals, Cleveland, Ohio
3. Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
4. Center for Sleep and Cardiovascular Outcomes Research, Division of Pulmonary Allergy and Critical Care Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
5. Magee‐Womens Research Institute, Pittsburgh, Pennsylvania
6. University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania