1Heart and Lung Center, Helsinki University Hospital, and University of Helsinki, Haartmaninkatu 4, P.O. Box 340, 00029 Helsinki, Finland
2Anesthesia and Critical Care, Research Unit of Surgery, University of Oulu, Oulu, Finland
3Department of Cardiac Surgery, Glenfield Hospital, University Hospitals of Leicester, Leicester, UK
4Southampton University Hospital, Southampton, UK
5UK Aortic Surgery Group, Wessex Cardiothoracic Centre, Division of Cardiac Surgery, Southampton University Hospital, Southampton, UK
6Division of Cardiac Surgery, University of Verona Medical School, Verona, Italy
7Department of Cardio-Thoracic Surgery, Jean Minjoz University Hospital, Besançon, France
8Service de Chirurgie Thoracique et Cardio-vasculaire, Hôpital Henri Mondor, Assistance Publique - Hôpitaux de Paris, Créteil, France
9Department of Cardiovascular Surgery, Ziekenhuis Oost-Limburg, Genk, Belgium
10Department of Cardiothoracic Surgery, Münster University Hospital, Münster, Germany
11Department of Cardiovascular Surgery, German Aortic Centre Hamburg, University Heart and Vascular Centre Hamburg, Hamburg, Germany
12Institute of Clinical and Experimental Medicine, Prague, Czech Republic
13Northern General Hospital, Herries Road, Sheffield, UK
14Liverpool Cardiovascular Surgery, Liverpool Heart and Chest Hospital, Faculty of Health and Life Sciences, Liverpool Centre for Cardiovascular Science, University of Liverpool, Liverpool, UK
15Cardiac Surgery Department, University of Udine, Udine, Italy
16Department of Cardiac Surgery, University of Turin, Turin, Italy
17Leipzig Heart Center, Leipzig, Germany
18Cardiovascular and Thoracic Surgery, Saint-Luc’s Hospital, Catholic University of Louvain, Brussels, Belgium
19Department of Cardiac Surgery, University Hospital Antwerp, Edegem, Belgium
20Cardiac Surgery, University Hospitals Leuven, Leuven, Belgium
21Department of Cardiac Surgery, AZ St-Jan, Bruges, Belgium