1. Foumbot District Hospital, Foumbot, Cameroon
2. Grace Community Health and Development Association, Kumba, Cameroon
3. Health and Human Development (2HD) Research Network, Douala, Cameroon
4. Mbengwi District Hospital, Mbengwi, Cameroon
5. Non-Communicable Disease Unit, Clinical Research Education, Networking and Consultancy (CRENC), Douala, Cameroon
6. Bafang District Hospital, Bafang, Cameroon
7. Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, UK
8. Faculty of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK
9. Department of Orthopaedics, Southend University Hospital, Essex, UK