1. Department of Cardiac SurgeryCentre Cardiologique du Nord de Saint‐DenisParis France
2. Department of Cardiac SurgeryGolden Jubilee National HospitalGlasgow UK
3. Department of Cardiac SurgeryInstitute of Cardiovascular and Medical Science, University of GlasgowGlasgow UK
4. Department of Cardiac SurgeryLa Pitié Salpetriere HospitalParis France