1. La Paz Children's HospitalMadridSpain
2. Children's HospitalUniversity of Colorado School of MedicineAuroraColoradoUSA
3. Universidad Nacional de ColombiaBogotáColombia
4. KardiozentrumLa PazBolivia
5. Sree Chitra Tirunal Institute for Medical Sciences and TechnologyTrivandrumIndia
6. University CollegeLondonUK
7. Heart InstituteUniversity of São PauloSão PauloBrazil
8. University of Chicago at IllinoisChicagoUSA
9. National Institute of CardiologyMexico CityMexico
10. Stollery Children's Hospital, University of AlbertaEdmontonAlbertaCanada