[1] University of Maryland School of Medicine,Department of Surgery
[2] Johns Hopkins University School of Medicine,Department of Surgery
[3] University of Pittsburgh Medical Center,Department of Surgery
[4] University Hospital Essen,Department of Surgery
[5] Fundeni Clinical Institute,Dan Setlacec Center of General Surgery and Liver Transplantation
[6] Curry Cabral Hospital,Department of Surgery
[7] Ospedale San Raffaele,Department of Surgery
[8] Cliniques Universitaires Saint-Luc,Department of Pathology
[9] Hopitaux Universitaires de Geneve,Department of Pathology