1. a Department of Epidemiology and Public Health, Miller School of Medicine , University of Miami , Miami
2. b Department of Community Dentistry and Behavioral Science, College of Dentistry , University of Florida , Gainesville , FL , USA
3. c Behavioral and Clinical Surveillance Branch, Division of HIV/AIDS Prevention, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention , Centers for Disease Control and Prevention , Atlanta , GA , USA