1. Pediatric Cardiology and Congenital Heart Disease Unit Pediatric Department Hospital Materno Infantil Complejo Hospitalario Universitario A Coruña A Coruña Spain
2. Pediatric Cardiology and Congenital Heart Disease Unit Pediatric Department Hospital Gregorio Marañón Madrid Spain
3. Pediatric Cardiology and Congenital Heart Disease Unit Pediatric Department Hospital La Paz Madrid Spain
4. Pediatric Cardiology and Congenital Heart Disease Unit Pediatric Department Hospital Vall d´Hebrón Barcelona Spain
5. Pediatric Cardiology and Congenital Heart Disease Unit Pediatric Department Hospital Reina Sofía Córdoba Spain
6. Cardiology Department Hospital Clinic i Provincial Barcelona Spain
7. Cardiology Department Hospital Puerta de Hierro Madrid Spain
8. Cardiology Department Hospital Miguel Servet Zaragoza Spain
9. Pediatric Cardiology and Congenital Heart Disease Unit Pediatric Department Hospital La Fe Valencia Spain
10. Cardiology Department Hospital Central de Asturias Oviedo Spain
11. Cardiology Department Hospital Virgen del Rocío Sevilla Spain