Response to HAART in Ethiopians and Tanzanians stratified by
copy number. Average values (solid line) and standard error of the mean (dashed line) of CD4+ cell counts was calculated for the different timepoints following initiation of HAART. Patients were stratified according to CCL3L1 copy number, with high copy number being greater than the median integer value, which was 3 copies in Ethiopians and 4 copies in Tanzanians. N = 798 CD4+ values in Ethiopians, n = 894 CD4+ values in Tanzanians.