1. Loma Linda University School of Medicine, Loma Linda, California, USA.
2. Loma Linda University Medical Center, Department of Gynecology and Obstetrics, Loma Linda, California, USA.
3. Weill Cornell Medicine, Department of Obstetrics and Gynecology, New York, New York, USA.
4. Loma Linda University Medical Center, Department of Psychiatry, Loma Linda, California, USA.