1 Department of Cardiac Surgery, Ziekenhuis Oost Limburg, Genk, Belgium.
2 Department of Cardiac Surgery, University Medical Centre Utrecht, Utrecht, Netherlands.
3 Department of Cardiac Surgery, Leiden University Medical Center, Leiden, Netherlands.
4 Department of Cardiac Surgery, Na Homolce Hospital, Prague, Czech Republic.
5 Department of Cardiac Surgery, Istanbul Mehmet Akif Ersoy Cardiovascular Surgery Hospital, University of Health Sciences, Istanbul, Turkey.
6 Department of Cardiac Surgery, ISALA Hospital, Zwolle, Netherlands.
7 Department of Cardiac Surgery, Maastricht University Medical Center, Maastricht, Netherlands.
8 Department of Cardiac Surgery, Gulhane Education ve Research Hospital, Ankara, Turkey.
9 Department of Cardiac Surgery, Acibadem Maslak Hospital, Acibadem University, Istanbul, Turkey.
10 Department of Cardiac Surgery, Cliniques Univesitaires Saint Luc, Brussels, Belgium.
11 Department of Cardiac Surgery, Imelda Hospital Bonheiden, Bonheiden, Belgium.
12 Department of Cardiac Surgery, University Hospital Hradec Kralove, Hradec Kralove, Czech Republic.
13 Department of Cardiac Surgery, MONZA Hospital, Bucharest, Romania.
14 Department of Cardiac Surgery, Liverpool Heart and Chest, Liverpool, United Kingdom.
15 Department of Cardiac Surgery, Private Hospital Jacques Cartier, Massy, France.
16 Department of Cardiac Surgery, Robert Bosch Hospital, Stuttgart, Germany.
17 Department of Cardiac Surgery, University Hospital Zurich, Zurich, Switzerland.
18 Department of Cardiac Surgery, CHU UCL Namur-Site Godinne, Namur, Belgium.
19 Department of Cardiac Surgery, CHU Dijon, Dijon, France.
20 Department of Cardiac Surgery, University Hospital Bordeaux, Bordeaux, France.
21 Department of Cardiac Surgery, Humanitas Gavazzeni, Bergamo, Italy.
22 Department of Cardiac Surgery, University Hospital Ghent, Ghent, Belgium.
23 Department of Cardiac Surgery, Erasme Hospital Brussels, Brussels, Belgium.
24 Department of Cardiac Surgery, Hôpital Henri MONDOR, Assistance Publique-Hôpitaux de Paris, Université Paris 12, Créteil, France.
25 Department of Cardiac Surgery, Hospital Clínic de Barcelona, Barcelona, Spain.
26 Department of Cardiac Surgery, San Camillo Hospital, Rome, Italy.
27 Department of Cardiac Surgery, Central Teaching Hospital of the Ministry of the Interior and Administration, Centre of Postgraduate Medical Education, Warsaw, Poland.
28 Department of Cardiac Surgery, AZ Maria Middelares, Ghent, Belgium.
29 Department of Cardiac Surgery, Cardiovascular Center, OLV Clinic, Aalst, Belgium.
30 Department of Cardiac Surgery, University of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.
31 Department of Cardiovascular Sciences, University Hospital Leuven, KU Leuven, Leuven, Belgium.