1. Department of SurgeryOulu University HospitalOulu Finland
2. Division of Cardiac Surgery, Department of Cardiothoracic SciencesSecond University of NaplesNaples Italy
3. Hamburg University Heart CenterHamburg Germany
4. Division of Cardiac SurgeryOspedali RiunitiTrieste Italy
5. Division of Cardiovascular SurgeryVerona University HospitalVerona Italy
6. Department of Thoracic and Cardio‐Vascular SurgeryUniversity Hospital Jean MinjozBesançon France
7. Division of Cardiothoracic and Vascular SurgeryPontchaillou University HospitalRennes France
8. Department of Molecular Medicine and Surgery, Department of Cardiothoracic Surgery and AnesthesiologyKarolinska Institutet, Karolinska University HospitalStockholm Sweden
9. Cardiovascular Center, Paracelsus Medical UniversityNuremberg Germany
10. Department of Cardiac SurgerySt. Anna HospitalCatanzaro Italy
11. Department of Cardiovascular SciencesCardiac Surgery Unit, S. Camillo‐Forlanini HospitalRome Italy
12. Centro Cuore MorgagniPedara Italy
13. Department of Cardiovascular SciencesClinical Sciences Wing, University of Leicester, Glenfield HospitalLeicester UK
14. Division of Cardiac SurgeryUniversity of GenoaGenoa Italy
15. Division of Cardiac SurgeryUniversity of ParmaParma Italy
16. Department of Cardiac SurgeryCentro Cardiologico–Fondazione Monzino IRCCS, University of MilanMilan Italy