1. Department of Health Sciences, Faculty of Sciences, University of York, York, UK
2. Department of Epidemiology and Biostatistics, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
3. Department of Sociology, Faculty of Social Sciences, University of York, York, UK
4. Department of Community & Public Health, Faculty of Health Sciences, Busitema University, Mbale, Uganda
5. Department of Disease Control and Environmental Health, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda
6. Hull York Medical School, University of York, Heslington, York, UK
7. Department of Health Policy Planning and Management, School of Public Health, College of Health Sciences, Makerere University, Kampala, Uganda