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. 2021 Sep 23;10(9):e25750. doi: 10.2196/25750

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©James E Egan, Sabina A Haberlen, Steven Meanley, Deanna Ware, Andre L Brown, Daniel Siconolfi, Mark Brennan-Ing, Ron Stall, Michael W Plankey, M Reuel Friedman. Originally published in JMIR Research Protocols (https://www.researchprotocols.org), 23.09.2021.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Research Protocols, is properly cited. The complete bibliographic information, a link to the original publication on https://www.researchprotocols.org, as well as this copyright and license information must be included.

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Healthy Aging Study participant recruitment and survey completion. IRB: institutional review board; MACS: Multisite AIDS Cohort Study; MSM: men who have sex with men; MSMW: men who have sex with men and women.