1. Navrongo Health Research Centre, Social Science Department Ghana Health Service Navrongo Ghana
2. Department of Epidemiology and Biostatistics Kwame Nkrumah University of Science and Technology Kumasi Ghana
3. Institute of Health Research University of Health and Allied Sciences Ho Ghana
4. Upper East Regional Health Directorate Ghana Health Service, PMB Bolgatanga Ghana
5. Research and Development Division Ghana Health Service Accra Ghana
6. Julius Global Health, Julius Center for Primary Care and Health Sciences University Medical Center Utrecht, Utrecht University Utrecht The Netherlands