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. 2020 Apr 2;9(4):e15029. doi: 10.2196/15029

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©Paul Drain, Kenneth Ngure, Nelly Mugo, Matthew Spinelli, Purba Chatterjee, Peter Bacchetti, David Glidden, Jared Baeten, Monica Gandhi. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 02.04.2020.

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 http://www.researchprotocols.org, as well as this copyright and license information must be included.

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The rationale behind the PUMA study. PUMA: Point-of-Care Urine Monitoring of Adherence; PrEP: preexposure prophylaxis; LC-MS: liquid chromatography/tandem mass spectrometry.