GSTM1 and anemia (phenotype): Of these children, 11 (9.6%) children were not included: in four, HIV was not confirmed on repeat testing (3.5%); two (1.8%) died before ART initiation, two (1.8%) had a severe anemia (Hb<7g/dL); one had an elevated transminases; one (0.8%) had a renal failure and one (0.8%) lacked parental consent.