1 Department of Abdominal Surgery, CUK, University of Kinshasa, Democratic Republic of Congo.
2 Department of Abdominal Surgery and Transplantation, CHU Liege, University of Liege, Liege, Belgium.
3 Department of General Surgery, University of Lubumbashi Clinics, University of Lubumbashi, Lubumbashi, Katanga Province, Democratic Republic of Congo.