Wu D, Ong JJ, Tang W, Ritchwood TD, Walker JS, Iwelunmor J, Tucker JD. Crowdsourcing Methods to Enhance HIV and Sexual Health Services: A Scoping Review and Qualitative Synthesis. J Acquir Immune Defic Syndr. 2019 Dec; 82 Suppl 3(Suppl 3):S271-S278.