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. 2011 May 13;13(2):e38. doi: 10.2196/jmir.1797

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©Patrick S. Sullivan, Christine M. Khosropour, Nicole Luisi, Matthew Amsden, Tom Coggia, Gina M. Wingood, Ralph J. DiClemente. Originally published in the Journal of Medical Internet Research (http://www.jmir.org), 13.05.2011.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in the Journal of Medical Internet Research, is properly cited. The complete bibliographic information, a link to the original publication on http://www.jmir.org/, as well as this copyright and license information must be included.

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Retention in an online behavioral risk survey among participants reporting only male partners in the past 12 months by self-identified sexual orientation of the participant (United States, 2009)