[1] Univ Addis Ababa, Sch Publ Hlth, Addis Ababa, Ethiopia
[2] Univ Calif San Francisco, Med Ctr, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA
[3] Johns Hopkins Univ, Sch Med, Ctr TB Res, Baltimore, MD 21231 USA
[4] 4169 Idlewood Parc Courtm, Tucker, GA 30084 USA