[1] Mayo Clin, Div Cardiovasc Dis, Rochester, MN USA
[2] Univ Texas Hlth Sci Ctr Houston, Div Med Genet, Dept Internal Med, Houston, TX 77030 USA
[3] Univ Naples 2, Dept Cardiothorac Sci, Naples, Italy
[4] Univ Oxford, Radcliffe Dept Med, Dept Cardiovasc Med, Oxford OX1 2JD, England
[5] Univ Laval, Inst Univ Cardiol & Pneumol Quebec, Quebec City, PQ, Canada
[6] Monaldi Hosp, Cardiol SUN, Naples, Italy
[7] Univ Salerno, Heart Dept, Cava de Tirreni & Amalfi Coast Hosp, Div Cardiol, Salerno, Italy
[8] Med Coll Wisconsin, Childrens Hosp Wisconsin, Milwaukee, WI 53226 USA
[9] CHU Sart Tilman, Univ Hosp Liege, GIGA Cardiovasc Sci, B-4000 Liege, Belgium
[10] Massachusetts Gen Hosp, Ctr Heart, Boston, MA 02114 USA
[11] Massachusetts Gen Hosp, Thorac Aort Ctr, Boston, MA 02114 USA
[12] Massachusetts Gen Hosp, Div Cardiac Surg, Boston, MA 02114 USA
[13] Massachusetts Gen Hosp, Corrigan Minehan Heart Ctr, Boston, MA 02114 USA
[14] Univ Autonoma Barcelona, Serv Cardiol, Hosp Vall dHebron, E-08193 Barcelona, Spain
[15] Harvard Univ, Brigham & Womens Hosp, Sch Med, Dept Anesthesiol Perioperat & Pain Med, Boston, MA 02115 USA