1. Department of Cardiac Surgery IRCCS Fondazione Policlinico San Matteo, Pavia, Italy
2. Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCSS, Italy
3. Department of Cardiac Surgery, Centre Cardiologique du Nord de Saint-Denis, Paris, France
4. Department of Cardiac Surgery, Henri Mondor University Hospital, Assistance Publique-Hôpitaux de Paris, Créteil, France