1. Division of Cardiology, Department of Medicine, David Geffen School of Medicine at UCLA , Los Angeles, CA 90095 , USA
2. Dante Pazzanese Instituto de Cardiologia , Sao Paulo , Brazil
3. Toronto General Hospital , Toronto, Ontario , Canada
4. Department of Cardiovascular Medicine, Adult Congenital Heart Disease Center, Okayama University Hospital , Okayama , Japan
5. ACHD Unit—IRCCS-Policlinico San Donato , San Donato M.se, Milan , Italy
6. Vita Salute San Raffaele University , Milan , Italy