Correction: A Cluster Randomized Trial of Routine HIV-1 Viral Load Monitoring in Zambia: Study Design, Implementation, and Baseline Cohort Characteristics
J. Koethe, A. Westfall, D. Luhanga, Gina M. Clark, J. Goldman, P. Mulenga, R. Cantrell, B. Chi, I. Zulu, M. Saag, J. Stringer
PLoS ONE