[1] Toronto Gen Hosp, Toronto, ON M5G 2N2, Canada
[2] Univ Toronto, Toronto Congenital Cardiac Ctr Adults, Toronto, ON, Canada
[3] McMaster Univ Med Ctr, McMaster Univ Adult Congenital Cardiac Clin, Hamilton, ON, Canada
[4] Univ Bern, Inselspital, Adult Congenital Heart Dis Program, Bern, Switzerland
[5] Univ Alberta, Mazankowski Alberta Heart Inst, Edmonton, AB, Canada
[6] Montreal Heart Inst, Univ Montreal Adult Congenital Heart Ctr, Montreal, QC, Canada
[7] Boston Adult Congenital Heart, Boston, MA USA
[8] Univ Med Ctr Utrecht, Utrecht, Netherlands
[9] Mayo Clin, Rochester, MN USA
[10] McGill Univ, McGill Adult Unit Congenital Heart Dis Excellence, Montreal, QC, Canada