Impact of early initiation versus national standard of care of antiretroviral therapy in Swaziland’s public sector health system: study protocol for stepped-wedge randomized trial
Walsh FJ, Bärnighausen T, Delva W, Fleming Y, Khumalo G, Lejeune C, Mazibuko S, Mlambo CK, Reis R, Spiegelman D, Zwane M, Okello V
