1. Navrongo Health Research Centre Ghana Health Service Navrongo Ghana
2. Julius Global Health, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht Utrecht University Utrecht The Netherlands
3. School of Medicine and Dentistry C K Tedam University of Technology and Applied Sciences Navrongo Upper East Region Ghana
4. MRC Lifecourse Epidemiology Unit and NIHR Southampton Biomedical Research Centre, University Hospital Southampton NHS Foundation Trust University of Southampton Southampton UK
5. Upper East Regional Health Directorate, PMB Bolgatanga Ghana
6. Global Health Research Institute, School of Health and Human Development University of Southampton Southampton UK
7. School of Public Health, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
8. Department of Human Development University of Southampton Southampton UK