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Assessment for eligibility, enrolment and losses to follow-up by treatment group. Analysis for the number of episodes of respiratory symptoms and of diarrhea was only conducted among children who were followed up for three or more months. The number of episodes was then divided by the number of months of follow-up. Analysis for changes in anthropometric indices, serum micronutrient concentrations and CD4 lymphocyte counts was only performed in children who had completed the study.
