1. Virgen Cardiovascular Research, Universidad Autonóma de Guadalajara, Mexico
2. Mexican Academic Consortium for Clinical Data Acquisition, Mexico
3. Ascension Borgess Hospital, Kalamazoo, Michigan, USA
4. Instituto Cardiovascular Rosario, Argentina
5. ICBA Instituto Cardiovascular, Buenos Aires, Argentina
6. Hospital Escuela de Agudos Dr Madariaga, Posadas, Argentina
7. Hospital Italiano La Plata, Buenos Aires, Argentina
8. Instituto de Cardiologia y Cirugia Cardiovascular Hospital Universitario Fundacion Favaloro, Buenos Aires, Argentina