1. Department of Surgery, Faculty of Medicine, University of Lubumbashi, Lubumbashi, Democratic Republic of the Congo
2. Institut Supérieur des Techniques Médicales, Lubumbashi, Democratic Republic of the Congo
3. Centre Médical Baraka, Lubumbashi, Democratic Republic of the Congo
4. Hôpital Militaire de Garnison de Lubumbashi, Lubumbashi, Democratic Republic of the Congo
5. Department of Histopathology, Faculty of Medicine, University of Lubumbashi, Lubumbashi, Democratic Republic of the Congo