1. University of California, San Diego School of Medicine La Jolla California USA
2. Department of Obstetrics, Gynecology and Reproductive Sciences University of California, San Diego Health Sciences La Jolla California USA
3. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics, Gynecology and Reproductive Sciences University of California, San Diego Health Sciences La Jolla California USA
4. Division of Maternal Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences University of California, San Diego Health Sciences La Jolla California USA