When 'The Cure' Is the Risk: Understanding How Substance Use Affects HIV and HCV in a Layered Risk Environment in San Juan, Puerto Rico - Hernández, Diana; Castellón, Pedro C.; Fernández, Yohansa; Torres-Cardona, Francisco A.; Parish, Carrigan; Gorshein, Danielle; Vargas Vidot, Jose; Miranda de Leon, Sandra; Rodriguez, Allan; Santana Bagur, Jorge; Feaster, Daniel J.; Schackman, Bruce R.; et al. (Health Education & Behavior, 2017)