However, the subgroup analysis of mortality in cohort 1 should be interpreted with caution, because the difference in effects between subgroups was moderate, the intervention–subgroup interaction was marginally significant, and the subgroups defined by CD4 cell count were not precisely defined in advance.
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Task shifting of antiretroviral treatment from doctors to primary-care nurses in South Africa (STRETCH): a pragmatic, parallel, cluster-randomised trial.
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