1. Health of Populations in Transition (HoPiT) Research Group; Faculty of Medicine and Biomedical Sciences; The University of Yaoundé 1; Yaoundé Cameroon
2. Department of Medicine and Specialties; Faculty of Medicine and Biomedical Sciences; University of Yaoundé I; Yaoundé Cameroon
3. Department of Public Health; School of Health Sciences; MONASH University Johannesburg; Johannesburg South Africa
4. Non-Communicable Diseases Research Unit; South African Medical Research Council; Cape Town South Africa
5. Department of Medicine; University of Cape Town; Cape Town South Africa