[1] Univ Gondar, Coll Med & Hlth Sci, Inst Publ Hlth, Dept Epidemiol & Biostat, Gondar, Ethiopia
[2] Univ Gondar, Coll Med & Hlth Sci, Dept Human Anat, Gondar, Ethiopia
[3] Univ Gondar, Sch Midwifery, Dept Womens & Family Hlth, Coll Med & Hlth Sci, Gondar, Ethiopia
[4] Univ Gondar, Coll Med & Hlth Sci, Dept Physiotherapy, Gondar, Ethiopia
[5] Univ Gondar, Coll Med & Hlth Sci, Inst Publ Hlth, Dept Environm & Occupat Hlth & Safety, Gondar, Ethiopia