Penulis: D. Michael Nelson

Helen Kay, MD, Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA D. Michael Nelson, MD, Ph D, Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, MO, USA Yuping Wang, MD, Ph D, Departments of Obstetrics and Gynecology, and Molecular and Cellular Physiology, Louisiana State University Health Sciences Center – Shreveport, Shreveport, LA, USA