1. School of Public Health, Institute of Health, Bule Hora University, Bule Hora, Ethiopia
2. School of Public Health, College of Medicine and Health Sciences, Hawassa University, Hawassa, Ethiopia
3. Department of Statistics, College of Natural and Computational Sciences, Hawassa University, Hawassa, Ethiopia
4. CAPHRI, School for Public Health and Primary Care, Maastricht University, Maastricht, the Netherlands
5. General Practice Research Unit, Department of Community Medicine, UiT the Arctic University of Norway, Tromsø, Norway