[1] Careggi Univ Hosp, Unit Cardiovasc Surg, Florence, Italy
[2] Paracelsus Med Univ, Dept Cardiovasc & Endovasc Surg, Salzburg, Austria
[3] Univ Hosp Zurich, Unit Intervent Cardiol, Zurich, Switzerland
[4] Tech Univ Munich TUM, German Heart Ctr, INSURE Inst Translat Cardiac Surg, Dept Cardiovasc Surg, Munich, Germany
[5] Tech Univ Munich TUM, German Heart Ctr Munich, Dept Cardiovasc Surg, Munich, Germany