[1] Med Univ Innsbruck, Dept Cardiac Surg, Anichstr 35, A-6020 Innsbruck, Austria
[2] Univ Heart Ctr Freiburg Bad Krozingen, Bad Krozingen, Germany
[3] Med Univ Innsbruck, Dept Neurol, Innsbruck, Austria
[4] Med Univ Innsbruck, Dept Internal Med 3, Innsbruck, Austria
[5] Hosp Dubai, Dept Cardiol Mediclin City, Dubai, U Arab Emirates
[6] West German Heart & Vasc Ctr Essen, Clin Thorac & Cardiovasc Surg, Essen, Germany
[7] Henry Mondor Hosp, Dept Cardiac Surg & Transplantat, Paris, France
[8] Louis Pradel Hosp, Dept Cardiac Surg & Transplantat, Lyon, France
[9] Maastricht Univ, Dept Cardiothorac Surg, Med Ctr, Maaastricht, Netherlands
[10] San Donato Hosp, Dept Cardiac Surg, IRCCS, Milan, Italy