title: Reply.
authors: Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, University of Tennessee Medical Center, Knoxville, TN. Electronic address: ctowers@utmck.edu.
authors: Craig V
authors: CV
authors: Towers
authors: Department of Obstetrics & Gynecology, Division of Maternal-Fetal Medicine, University of Tennessee Medical Center, Knoxville, TN.
authors: Mark D
authors: MD
authors: Hennessy