Point-of-care viral load testing to manage HIV viraemia during the rollout of dolutegravir-based ART in South Africa: a randomised feasibility study (POwER) by Dorward, J, Sookrajh, Y, Lessells, R, Bulo, E, Naidoo, J, Naidoo, K, Bodley, N, Khanyile, M, Van Vuuren, CJ, Moodley, P, Samsunder, N, Lewis, L, Drain, PK, Hayward, G, Butler, CC, Garrett, N