[1] Univ Ottawa, Div Cardiac Surg, Heart Inst, Ottawa, ON, Canada
[2] Mem Univ, Dept Med, Div Cardiol, St John, NF, Canada
[3] Univ Toronto, Univ Hlth Network, Peter Munk Cardiac Ctr, Div Cardiovasc Surg, Toronto, ON, Canada
[4] Univ Ottawa, Div Cardiac Anesthesiol, Heart Inst, Ottawa, ON, Canada
[5] New Brunswick Heart Ctr, Dept Surg, St John, NB, Canada
[6] Univ Laval, Inst Univ Cardiol & Pneumol Quebec, Fac Pharm, Quebec City, PQ, Canada
[7] Univ Laval, Inst Univ Cardiol & Pneumol Quebec, Dept Chirurg, Quebec City, PQ, Canada
[8] Univ Toronto, Peter Munk Cardiac Ctr, Toronto, ON, Canada
[9] Univ Toronto, Stroke Richard Lewar Ctr, Toronto, ON, Canada
[10] QEII Hlth Sci Ctr, Div Cardiac Surg, Halifax, NS, Canada
[11] Maine Med Ctr, Dept Cardiovasc Surg, Portland, ME USA
[12] St Marys Gen Hosp, Div Cardiac Surg, Kitchener, ON, Canada
[13] Univ Toronto, Keenan Res Ctr Biomed Sci, UnityHlth, Toronto, ON, Canada
[14] Univ Calgary, Libin Cardiovasc Inst, Dept Cardiac Sci, Sect Cardiac Surg, Calgary, AB, Canada
[15] New Brunswick Heart Ctr, Dept Med, St John, NB, Canada
[16] McMaster Univ, Dept Surg, Hamilton, ON, Canada
[17] Univ Alberta, Dept Med, Edmonton, AB, Canada
[18] Univ Alberta, Mazankowski Alberta Heart Inst, Edmonton, AB, Canada
[19] Univ Manitoba, Max Rady Coll Med, Dept Surg, Sect Cardiac Surg, Winnipeg, MB, Canada