1. Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas.
2. Division of Community Health Sciences, The University of Illinois at Chicago School of Public Health, Chicago, Illinois.
3. Department of Behavioral Science, MD Anderson Cancer Center, Houston, Texas.
4. Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas.
5. Harris Health System, Thomas Street Health Center, Houston, Texas.
6. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Texas Health Science Center at Houston, Houston, Texas.
7. Department of Medicine, Baylor College of Medicine and Study Design and Analysis Core, Baylor-UTHouston Center for AIDS Research, Houston, Texas.
8. Department of Internal Medicine, University of Texas Health Science Center at Houston, Houston, Texas.