Marital Partnership Selection and HIV Seroconcordance in a Generalized Epidemic Setting • Elizabeth A. Sully, Princeton University ; Dominic Bukenya, MRC/UVRI Uganda Research Unit on AIDS ; Janet Seeley, MRC/UVRI Uganda Research Unit on AIDS and London School of Hygiene and Tropical Medicine (LSHTM)

Couple-Level Age and Educational Asymmetries and HIV Risk in Kenya • Ashley Fox, Icahn School of Medicine at Mount Sinai ; Colleen Lynch, Icahn School of Medicine at Mount Sinai

Are Men and Women with Gender-Typical Behaviors More Likely to Engage in Concurrent Sexual Partnerships? A Nationally Representative Longitudinal Data Analysis • Paul J. Fleming, University of North Carolina at Chapel Hill

Does Community Physical Activity Protect Urban Poor Youth in Accra from Sexual Risk Taking beyond Their Own Participation in Physical Activity? • Nurudeen Alhassan, University of Ghana ; Francis Nii-Amoo Dodoo, Pennsylvania State University and University of Ghana