1. Department of Obstetrics and Gynecology, West Virginia University School of Medicine, Robert C. Byrd Health Sciences Center, Morgantown, WV, USA
2. Department of Basic Pharmaceutical Sciences, West Virginia University School of Pharmacy, Robert C. Byrd Health Sciences Center, Morgantown, WV, USA
3. Department of Obstetrics and Gynecology, Creighton University School of Medicine, 601 No. 30th Street, Suite 4700, Omaha 68131, NE, USA