[1] Bahir Dar Univ, Coll Med & Hlth Sci, Bahir Dar 6000 77, Ethiopia
[2] Univ Queensland, Sch Publ Hlth, Brisbane, Qld, Australia
[3] Univ Gondar, Coll Med & Hlth Sci, Sch Biomed & Lab Sci, Dept Immunol, Gondar, Ethiopia
[4] Curtin Univ, Sch Publ Hlth, Perth, WA, Australia
[5] Univ Gondar, Inst Publ Hlth, Dept Epidemiol & Biostat, Gondar, Ethiopia
[6] Australian Natl Univ, Sch Populat Hlth, Canberra, ACT, Australia
[7] Univ Groningen, Univ Med Ctr Groningen, Dept Epidemiol & Psychiat, Groningen, Netherlands
[8] Maastricht Univ, Sch Business & Econ, Dept Quantitat Econ, Maastricht, Netherlands
[9] Univ Southern Denmark, Fac Hlth Sci, Dept Clin Res, Odense, Denmark
[10] Univ Canberra Hosp, Fac Hlth, Canberra, ACT, Australia