[1] Hosp Braga, Cardiol Dept, Braga, Portugal
[2] Complejo Hosp Univ Santiago de Compostela, Intervent Cardiol Dept, Santiago De Compostela, Spain
[3] Complejo Hosp Univ Santiago de Compostela, Cardiac Surg Dept, Santiago De Compostela, Spain
[4] Complejo Hosp Univ Vigo, Cardiac Surg Dept, Vigo, Spain