1. Department of Obstetrics and Gynecology, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA
2. James A. Haley Veterans' Hospital, Mental Health and Behavioral Sciences Service, Tampa, FL, USA
3. Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA