1. a Rural Center for AIDS/STD Prevention, Indiana University , Bloomington , USA
2. b The Kinsey Institute for Research in Sex, Gender, and Reproduction, Indiana University Bloomington , Bloomington , USA
3. c Rural Center for AIDS/STD Prevention , Indiana University , Bloomington , USA
4. d Department of Behavioral Sciences and Health Education, Rollins School of Public Health and Scientist in the Behavioral and Social Sciences Core, Emory Center for AIDS Research , Emory University , Atlanta , GA , USA
5. e Rural Center for AIDS/STD Prevention, Indiana University , USA
6. f Department of Behavioral Sciences and Health Education , Rollins School of Public Health of Emory University and Scientist in the Behavioral and Social Sciences Core, Emory Center for AIDS Research , Emory University , USA