1. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, The University of Texas Health Science Center at San Antonio, San Antonio, Texas
2. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, The University of Texas Health Science Center at San Antonio, San Antonio, Texas; Department of Obstetrics and Gynecology, MSC 7836, The University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229-3900