1. Department of Obstetrics and Gynecology, Center for Women’s Health Research, Meharry Medical College, Nashville, TN, USA
2. Perinatal Research Laboratory, Centennial Hospital, Nashville, TN, USA
3. Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston, Galveston, TX, USA
4. MD Anderson Cancer Center, Houston, TX, USA
5. Vanderbilt University, Nashville, TN, USA