1 Division of Gynecologic Endocrinology and Reproductive Medicine, Department of Obstetrics, Gynecology and Reproductive Medicine, Hannover Medical School, Hannover, Germany.
2 Department of Physiology and Functional Genomics and Department of Obstetrics and Gynecology, University of Florida College of Medicine, Gainesville Florida.
3 Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Lutherville, Maryland.