[1] Weill Cornell Med, Dept Cardiothorac Surg, 525 E 68th St, New York, NY 10065 USA
[2] Cleveland Clin, Dept Thorac & Cardiovasc Surg, Cleveland, OH 44106 USA
[3] Herzzentrum Leipzig, Leipzig, Germany
[4] Univ Toronto, Sunnybrook Hlth Sci, Schulich Heart Ctr, Toronto, ON, Canada
[5] Lenox Hill Hosp, New York, NY 10021 USA
[6] Icahn Sch Med Mt Sinai, Dept Cardiovasc Surg, New York, NY 10029 USA
[7] Univ Ottawa Heart Inst, Div Cardiac Surg, Ottawa, ON, Canada
[8] Univ Sydney, Sydney Med Sch, Sydney, NSW, Australia
[9] Univ Oxford, Oxford, England