Prospective validation of classification of intraoperative adverse events (ClassIntra) : international, multicentre cohort study - Dell-Kuster, Salome (Department of Clinical Research, University of Basel, Basel, Switzerland) ; Gomes, Nuno V (Department of Clinical Research, University of Basel, Basel, Switzerland) ; Gawria, Larsa (Radboud University Medical Centre. Department of Surgery) ; Aghlmandi, Soheila (University Hospital Basel (Basilea, Suïssa)) ; Aduse-Poku, Maame (Guy's and St Thomas' NHS Foundation Trust (Regne Unit)) ; Bissett, Ian (Department of Surgery, University of Auckland, Auckland, New Zealand) ; Blanc, Catherine (Lausanne University Hospital) ; Brandt, Christian (Department of Anaesthesiology, Bürgerspital Solothurn, Solothurn, Switzerland) ; ten Broek, Richard B. (Radboud University Medical Centre. Department of Surgery) ; Bruppacher, Heinz R. (Department of Anaesthesiology, Schulthess Clinic, Zurich, Switzerland) ; Clancy, Cillian (Department of Surgery, Tallaght University Hospital, Dublin, Ireland) ; Delrio, Paolo (Colorectal Surgical Oncology, Abdominal Oncology Department, Istituto Nazionale per lo Studio e la Cura dei Tumori, "Fondazione Giovanni Pascale" IRCCS, Naples, Italy) ; Espin-Basany, Eloy (Hospital Universitari Vall d'Hebron. Institut de Recerca) ; Galanos-Demiris, Konstantinos (George Papanicolaou General Hospital (Tessalònica, Grècia)) ; Gecim, I Ethem (Department of Surgery, Ankara University Medical School, Ankara, Turkey) ; Ghaffari, Shahbaz (Universitätskliniken der MedUni Wien) ; Gié, Olivier (Lausanne University Hospital) ; Goebel, Barbara (University Children's Hospital Basel (Basilea, Suïssa)) ; Hahnloser, Dieter (Lausanne University Hospital) ; Herbst, Friedrich (Universitätskliniken der MedUni Wien) ; Orestis, Ioannidis (George Papanicolaou General Hospital (Tessalònica, Grècia)) ; Joller, Sonja (University Children's Hospital Basel (Basilea, Suïssa)) ; Kang, Soojin (Guy's and St Thomas' NHS Foundation Trust (Regne Unit)) ; Martín, Rocio (Hospital Universitari Vall d'Hebron) ; Mayr, Johannes (University Children's Hospital Basel (Basilea, Suïssa)) ; Meier, Sonja (Guy's and St Thomas' NHS Foundation Trust (Regne Unit)) ; Murugesan, Jothi (University of Sydney, Royal North Shore Hospital, Sydney, Australia) ; Nally, Deirdre (Department of Surgery, Tallaght University Hospital, Dublin, Ireland) ; Ozcelik, Menekse (Department of Anaesthesiology, Ankara University Medical School, Ankara, Turkey) ; Pace, Ugo (Colorectal Surgical Oncology, Abdominal Oncology Department, Istituto Nazionale per lo Studio e la Cura dei Tumori, "Fondazione Giovanni Pascale" IRCCS, Naples, Italy) ; Passeri, Michael (Department of Surgery, Carolinas Medical Centre, Charlotte, NC, USA) ; Rabanser, Simone (Department of Anaesthesiology, Cantonal Hospital Graubünden, Chur, Switzerland) ; Ranter, Barbara (Department of Vascular Surgery, Medical University of Innsbruck, Innsbruck, Austria) ; Rega, Daniela (Colorectal Surgical Oncology, Abdominal Oncology Department, Istituto Nazionale per lo Studio e la Cura dei Tumori, "Fondazione Giovanni Pascale" IRCCS, Naples, Italy) ; Ridgway, Paul F. (Department of Surgery, Tallaght University Hospital, Dublin, Ireland) ; Rosman, Camiel (Radboud University Medical Centre. Department of Surgery) ; Schmid, Roger (Department of Surgery, Bürgerspital Solothurn, Solothurn, Switzerland) ; Schumacher, Philippe (Department of Anaesthesiology, Bürgerspital Solothurn, Solothurn, Switzerland) ; Solis-Pena, Alejandro (Hospital Universitari Vall d'Hebron) ; Villarino, Laura (Hospital Universitari Vall d'Hebron) ; Vrochides, Dionisios (Department of Surgery, Carolinas Medical Centre, Charlotte, NC, USA) ; Engel, Alexander (University of Sydney, Royal North Shore Hospital, Sydney, Australia) ; O'Grady, Greg (Department of Surgery, University of Auckland, Auckland, New Zealand) ; Loveday, Benjamin (Department of Surgery, University of Auckland, Auckland, New Zealand) ; Steiner, Luzius A. (Department of Clinical Research, University of Basel, Basel, Switzerland) ; Van Goor, Harry (Radboud University Medical Centre. Department of Surgery) ; Bucher, Heiner (Department of Clinical Research, University of Basel, Basel, Switzerland) ; Clavien, Pierre-Alain (University Hospital Zurich (Suïssa)) ; Kirchhoff, Philipp (University Hospital Basel (Basilea, Suïssa)) ; Rosenthal, Rachel (Medical Faculty, University of Basel, Basel, Switzerland) ; Universitat Autònoma de Barcelona