1. Department of Public Health, College of Health Sciences, Arsi University, Asella, Ethiopia
2. Department of Public Health, School of Public Health, College of Medicine and Health Science, Dilla University, Dilla, Ethiopia
3. Department of Global Public Health and Primary Care, Bergen Centre for Ethics and Priority Setting, University of Bergen, Bergen, Norway
4. Section for Global Health and Rehabilitation, Faculty of Health and Social Science, Western Norway University of Applied Sciences, Bergen, Norway