1. Yaoundé University Teaching Hospital Yaoundé Cameroon
2. Biyem‐Assi District Hospital Yaoundé Cameroon
3. Department of Internal Medicine and Specialities Faculty of Medicine and Biomedical Sciences of the University of Yaoundé I Yaoundé Cameroon
4. Department of Public Health Faculty of Medicine and Biomedical Sciences of the University of Yaoundé I Yaoundé Cameroon
5. Department of Morphological Sciences and Pathological Anatomy Faculty of Medicine and Biomedical Sciences of the University of Yaoundé I Yaoundé Cameroon
6. Department of Dermatology and Venerology Unit, Faculty of Health Sciences of Cotonou University of Abomey Calavi Cotonou Benin
7. Department of Dermatology and Venerology Teaching Hospital of Conakry and Gamal Abdel Nasser University Conakry Republic of Guinea