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. 2019 Feb 20;23(6):1494–1507. doi: 10.1007/s10461-019-02410-1

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© The Author(s) 2019

OpenAccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 1 — Recruitment tree diagrams. Participants are depicted by circles with their recruits shown as the connected circles below them. The larger circles denote seeds. Red circles represent women aged 18–24 and blue circles represent women aged ≥ 25 (Colour figure online)