RT Journal Article SR Electronic T1 HIV infection and risk behaviours in young gay and bisexual men JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 14 OP 15 VO 163 IS 1 A1 Robert S. Hogg A1 Steffanie A. Strathdee A1 Keith Chan A1 Stephen L. Martindale A1 Kevin J.P. Craib YR 2000 UL http://www.cmaj.ca/content/163/1/14.2.abstract