Institution: | 1. Department of Obstetrics and Gynecology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA;2. Department of Obstetrics and Gynecology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
Department of Obstetrics and Gynecology, Center for Research on Reproduction and Women's Health, Hospital of the University of Pennsylvania, Philadelphia, PA, USA;3. Department of Obstetrics and Gynecology, Weill Cornell Medical College, New York, NY, USA;4. Department of Obstetrics and Gynecology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
Department of Biostatistics, Epidemiology and Informatics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA |