1. Heart InstituteUniversity of São PauloSão PauloBrazil
2. Columbia University College of Physicians and SurgeonsNew YorkNew YorkUSA
3. University CollegeLondonUnited Kingdom
4. Stanford University School of MedicineStanfordCaliforniaUSA
5. King Fahd Armed Forces HospitalJeddahSaudi Arabia
6. La Paz Children's HospitalMadridSpain
7. Children's Hospital ColoradoAuroraColoradoUSA
8. King Saud UniversityRiyadhSaudi Arabia
9. Amrita Institute of Medical SciencesKeralaIndia
10. Sree Chitra Tirunal Institute for Medical Sciences and TechnologyTrivandrumIndia
11. Second University of NaplesNaplesItaly
12. National Institute of HealthMaputoMozambique
13. Dante Pazzanese InstituteSão PauloBrazil
14. King Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia
15. King Abdulaziz Cardiac CenterRiyadhSaudi Arabia
16. KardiozentrumLa PazBolivia
17. Hospital Patronato Municipal San Jose SurQuitoEcuador
18. Universidad Nacional de ColombiaBogotaColombia
19. National Institute of CardiologyMexico CityMexico
20. All India Institute of Medical SciencesNew DelhiIndia
21. Great Ormond Street HospitalLondonUnited Kingdom
22. Federal University of Minas GeraisBelo HorizonteBrazil
23. Stollery Children's HospitalUniversity of AlbertaEdmontonAlbertaCanada