1. Department of Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, North Carolina
2. Department of Obstetrics and Gynecology, Department of The Center of Research for Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, North Carolina
3. Department of Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, Department of The Center of Research for Obstetrics and Gynecology Wake Forest University School of Medicine, Winston-Salem, North Carolina
4. Department of Obstetrics and Gynecology, Wake Forest University School of Medicine, Winston-Salem, North Carolina, Department of Physiology and Pharmacology, Wake Forest University School of Medicine, Winston-Salem, North Carolina,