CD4 and tuberculosis: The researchers retrospectively reviewed the charts and other program recordsof 308 patients with HIV, who had CD4 counts≤350 cells/μl, wereaged 15 years or more, had never previously taken cART, and received theirfirst TB treatment at one of five cART sites (two urban, three rural) inRwanda between January 2004 and February 2007.