1. Department of Obstetrics and Gynecology, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
2. Department of Family Medicine, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
3. Department of Internal Medicine, University of Texas Medical Branch at Galveston, Galveston, Texas, USA
4. Preventive Medicine and Community Health, University of Texas Medical Branch at Galveston, Galveston, Texas, USA