1. Divisions of Maternal-Fetal Medicine, Departments of Obstetrics and Gynecology, The University of Utah, Salt Lake City, Utah; The University of Texas Medical Branch at Galveston, Galveston, Texas; Baylor College of Medicine, Houston, Texas
2. Divisions of Maternal-Fetal Medicine, Departments of Obstetrics and Gynecology, The University of Utah, Salt Lake City, Utah; The University of Texas Medical Branch at Galveston, Galveston, Texas; Baylor College of Medicine, Houston, Texas;