Fig. 1From: Efficacy of vitamin D3 supplementation in reducing incidence of pulmonary tuberculosis and mortality among HIV-infected Tanzanian adults initiating antiretroviral therapy: study protocol for a randomized controlled trialTrial of Vitamins-4 (ToV4) flow diagram. 25(OH)D 25-hydroxyvitamin D, ART antiretroviral therapy, LTFU loss to follow-up, TB tuberculosisBack to article page