1. Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY (M.G., I.H., N.B.R.).
2. Department of Cardiac Surgery, Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA (J.C.).
3. Schulich Heart Centre Sunnybrook Health Sciences Centre, University of Toronto, Ontario, Canada (S.E.F.).
4. Division of Cardiac Surgery, University of Ottawa Heart Institute, Ontario, Canada (M.R.).