The effectiveness of a group-based computerized HIV/STI prevention intervention for black women who use drugs in the criminal justice system: study protocol for E-WORTH (Empowering... oleh Karen Johnson, Louisa Gilbert, Timothy Hunt, Elwin Wu, Lisa Metsch, Dawn Goddard-Eckrich, Stanley Richards, Rick Tibbetts, Jessica C. Rowe, Milton L. Wainberg, Nabila El-Bassel