[1] Univ Naples 2, Dept Cardiothorac Sci, Div Cardiac Surg, I-80131 Naples, Italy
[2] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Anesthesiol Perioperat & Pain Med, Boston, MA 02115 USA
[3] Univ Michigan, Med Ctr, Dept Internal Med, Div Cardiol, Ann Arbor, MI 48109 USA
[4] Univ Saarland, Med Ctr, Dept Thorac & Cardiovasc Surg, Homburg, Germany
[5] Hosp Univ Penn, Dept Cardiovasc Surg, Philadelphia, PA 19104 USA
[6] Mayo Clin, Div Cardiovasc Dis, Rochester, MN USA
[7] Hosp Valle De Hebron, Dept Cardiol, Barcelona, Spain
[8] Univ Laval, Quebec City, PQ, Canada
[9] Univ Naples 2, Monaldi Hosp, Div Cardiol, I-80131 Naples, Italy
[10] Harvard Univ, Brigham & Womens Hosp, Sch Med, Div Cardiac Surg, Boston, MA 02115 USA
[11] IRCCS Policlin San Donato, Dept Cardiac Surg, Milan, Italy
[12] Univ Hosp, Heart Dept, Salerno, Italy
[13] Univ Hosp, Cardiovasc Surg Serv, Liege, Belgium
[14] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Div Cardiac Surg, Boston, MA USA