1. Institute of Educational Research (IER), Addis Ababa University, Addis Ababa P.O. Box 1176, Ethiopia
2. Institute of Medical Education, LMU University Hospital, LMU Munich, Pettenkoferstr. 8A, 80336 Munich, Germany
3. Department of Anaesthesia, College of Medicine and Health Sciences, Hawassa University, Hawassa P.O. Box 05, Ethiopia
4. Institute of Health, Jimma University, Jimma P.O. Box 307, Ethiopia
5. School of Medicine, College of Health Sciences, Addis Ababa University, Addis Ababa P.O. Box 9086, Ethiopia
6. Department of Psychiatry, College of Health and Medical Sciences, Bahir Dar University, Bahir Dar P.O. Box 79, Ethiopia