Fig. 2From: Effect of maternal vitamin D3 supplementation on maternal health, birth outcomes, and infant growth among HIV-infected Tanzanian pregnant women: study protocol for a randomized controlled trialSchedule of enrollment, interventions, and assessments (SPIRIT Figure). 25(OH)D 25-hydroxyvitamin D, HIV human immunodeficiency virus, MUAC mid-upper arm circumference, WHO World Health OrganizationBack to article page