1 Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of South Florida, 2 Tampa General Circle # 6000, Tampa, FL 33606. Electronic address: joserduncan@yahoo.com.
2 Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, University of South Florida, Tampa, FL.
3 University of Florida College of Medicine - Jacksonville, Jacksonville, FL.