1. Lecturer, School of Nursing, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia and PhD student at Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.
2. Associate Professor, Department of Health Management and Health Economics, Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway, and Head of Division of Surgery, Akershus University Hospital, Nordbyhagen, Norway
3. Senior Lecturer, School of Public Health, St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia
4. Associate Professor, Department of Interdisciplinary Health Sciences, Institute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway