Determinants of sexual risk-taking among young HIV-negative gay and bisexual men.
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R. Hogg | J. Montaner | M. Schechter | S. Strathdee | M. O’Shaughnessy | K. Craib | P. Cornelisse | K. Craib | S. Martindale | M. O'shaughnessy | M. O'Shaughnessy | Steve Martindale