1. CIBERCV, Instituto de Salud Carlos III, Madrid, Spain (F.F.-A., R.S.-R., A.C.P., M.E.F.-S., R.Y., J.A.S.R., P.L.S., J.S., M.F.J., J.B.)
2. From the Department of Cardiology, Hospital General Universitario Gregorio Marañón, Instituto de Investigación Sanitaria Gregorio Marañón, and Facultad de Medicina, Universidad Complutense, Madrid, Spain (R.S.-R., A.C.P., M.E.F.-S., R.Y., J.B.)
3. Coretherapix S.L.U./Tigenix Group Madrid, Spain (I.G., M.M., I.P., M.L., E.L., J.L.A., O.D., L.C.)
4. Department of Cardiovascular Medicine, University Hospitals and KU Leuven, Belgium (J.B., A.B., P.C., S.J.)
5. HLA et Medicine (HLA-MED), Hôpital Saint-Louis, Paris, France (D.C., R.A.-D.)
6. Department of Cardiac Surgery, Complejo Hospitalario de Navarra, Pamplona, Spain (R.S.)
7. Department of Cardiology, Instituto de Ciencias del Corazón (ICICOR), Valladolid, Spain (J.A.S.R.)
8. Department of Cardiology, Policlínia Guipuzcoa, San Sebastián, Spain (M.L.)
9. Department of Cardiology, Hospital Clínico Universitario, Salamanca, Spain (P.L.S.)
10. Department of Cardiology, Hospital Clínico Universitario, Valencia, Spain (J.S.)
11. Department of Cardiology, IBIMA, UMA, UGC Corazón Hospital Clínico Virgen de la Victoria, Málaga, Spain (M.F.J.).