1. Department of Obstetrics and Gynecology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
2. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA.
3. Department of Medicine, and Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.
4. Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
5. Department of Biochemistry and Molecular Biology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA.