1. Association of Children with Heart Disease in the World, Milan, Italy
2. IRCCS Policlinico San Donato, Piazza Edmondo Malan, 20097, San Donato M.se, Milan, Italy
3. Hospital Universitario Materno-Infantil de Canarias, Las Palmas de GC, Canary Islands 35016, Spain
4. Red Crescent of United Arab Emirates, P.O. Box 3324 Abu Dhabi, UAE
5. Istituti Clinici Sant’Ambrogio, Via Francesco Daverio, 620122 Milan, Italy