University of Pennsylvania - Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center - Department of Obstetrics and Gynecology, University of Illinois at Chicago - Department of Obstetrics and Gynecology, Atrium Health - Department of Obstetrics and Gynecology, University of North Carolina (UNC) at Chapel Hill - Department of Obstetrics and Gynecology, University of California, San Francisco (UCSF) - Department of Obstetrics and Gynecology, Northwestern University - Department of Obstetrics and Gynecology, University of Rochester - Department of Obstetrics and Gynecology, Wayne State University - Department of Obstetrics and Gynecology and Center for Molecular Medicine and Genetics, University of South Carolina - Department of Obstetrics and Gynecology, University of Colorado - Department of Obstetrics and Gynecology, University of Pennsylvania - Department of Obstetrics and Gynecology, University of Pennsylvania - Department of Obstetrics and Gynecology, University of Pennsylvania - Department of Obstetrics and Gynecology, Augusta University - Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center - Department of Obstetrics and Gynecology, University of California, San Francisco (UCSF) - Department of Obstetrics and Gynecology, University of Colorado at Denver - Department of Biostatistics and Informatics, University of Colorado at Denver - Department of Obstetrics and Gynecology, National Institute of Child Health and Human Development (NICHD) - Fertility and Infertility Branch, Yale University - Department of Biostatistics, Yale University - Department of Biostatistics and Independent