[1] HIV AIDS & TB Res Directorate, Ethiopian Publ Hlth Inst, POB 138, Wolaita Sodo Addis Ababa, Ethiopia
[2] Univ Bergen, Ctr Int Hlth, Bergen, Norway
[3] Muhimbili Med Res Ctr, Natl Inst Med Res, Dare Selam, Tanzania
[4] Brussels Operat Ctr, Medecins Sans Frontieres, Med Dept Operat Res, Luxembourg, Luxembourg
[5] Guraghe Zonal Hlth Dept, Dis Prevent & Control Unit, Wolkite, Ethiopia