1 Department of Cardiology and Research Institute, Hospital Universitari Vall d'Hebron, Universitat Autònoma, Spain; Research Institute, Hospital Universitari Vall d'Hebron, Universitat Autònoma, Spain; CIBER-CardioVascular diseases (CIBER-CV), Barcelona, Spain. Electronic address: asambola@vhebron.net.
2 Department of Cardiology and Research Institute, Hospital Universitari Vall d'Hebron, Universitat Autònoma, Spain; Research Institute, Hospital Universitari Vall d'Hebron, Universitat Autònoma, Spain; CIBER-CardioVascular diseases (CIBER-CV), Barcelona, Spain.