RT Journal Article SR Electronic T1 New media challenges and opportunities JF Sexually Transmitted Infections JO Sex Transm Infect FD BMJ Publishing Group Ltd SP 309 OP 310 DO 10.1136/sextrans-2016-052673 VO 93 IS 5 A1 Lisa B Hightow-Weidman A1 Kathryn E Muessig YR 2017 UL http://sti.bmj.com/content/93/5/309.abstract AB