1. Radboud University Nijmegen Medical Center; Department of Surgery; Geert Grooteplein Zuid 10 Nijmegen Netherlands 6525 GA
2. Radboud University Nijmegen Medical Centre; Department of Anesthesiology; Nijmegen Netherlands
3. University College London; Division of Surgery and Interventional Science; 9th Floor, Royal Free Hospital Rowland Hill Street London UK NW3 2PF
4. Radboud University Nijmegen Medical Centre; Department of Operating Rooms; Hp 630, route 631 PO Box 9101 Nijmegen Netherlands 6500 HB
5. Radboud University Nijmegen Medical Centre; Department of Surgery; PO Box 9101 internal code 618 Nijmegen Netherlands 6500 HB