1. Paediatrician, Department of Paediatrics, Hospital of IME-Kimpese (Institut Medical Evangélique), PO Box 68, Lower Zaire.
2. Pathologist, Zairian Clinic of CMDG, Kinshasa
3. Senior Surgical Resident, Department of Surgery, University Hospital of Kinshasa PO Box 123, Kinshasa, Republic of Zaire