ACKNOWLEDGEMENTS
The SEARCH study gratefully acknowledges the Kenya Ministry of Health, Uganda Ministry of Health, our research teams and administrative teams in San Francisco, Kenya and Uganda, collaborators and advisory boards, and especially all communities and participants involved. We also thank Catherine Koss, Monica Ghandi, Hana Rivera Garza, Anindita Chattopadhyay and Karen Kuncze of the Hair Analytical Laboratory at the University of California, San Francisco for their work on analysing tenofovir concentrations in hair samples provided by participants.