Affiliation: | 1. Cardiology Department, Instituto Cardiovascular de Buenos Aires, Buenos Aires, Argentina;2. Cardiology Department, Kingston General Hospital, Queen''s University, Kingston, Ontario, Canada;3. Department of Cardiac Surgery, Kingston General Hospital, Queen''s University, Kingston, Ontario, Canada;4. Institut Catala d''Ciencies Cardiovasculars y Servicio de Cardiología, Hospital Santa Creu i Sant Pau, Barcelona, Spain |