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. 2015 Feb 27;6:86. doi: 10.3389/fimmu.2015.00086

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Copyright © 2015 Jin, Prestage, Mao, Poynten, Templeton, Grulich and Zablotska.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Proportions of condomless anal intercourse by partners’ HIV status, partner type, and sexual positioning in the Health in Men study. CLAI, condomless anal intercourse.