1. Department of Surgery Provincial General Hospital of Bukavu Democratic Republic of the Congo
2. Faculty of Medicine Catholic University of Bukavu Bukavu Democratic Republic of the Congo
3. Department of Surgery CHS, Makerere University Kampala Uganda
4. Department of Oto‐rhino‐laryngology Provincial General Hospital of Bukavu Bukavu Democratic Republic of the Congo
5. Department of Pediatrics Provincial General Hospital of Bukavu Bukavu Democratic Republic of the Congo