Felipe Díez-delhoyo, Enrique Gutiérrez-Ibañes, Gerard Loughlin, Ricardo Sanz-Ruiz, María Eugenia Vázquez-Álvarez, Fernando Sarnago-Cebada, Rocío Angulo-Llanos, Ana Casado-Plasencia, Francisco Fernández Avilés Diáz, Jaime Elízaga-Corrales, Instituto de Investigación Sanitaria Gregorio Marañón, Servicio de Cardiología, Departamento de Medicina, Universidad Complutense de Madrid, 28007 Madrid, Spain
Author contributions: All authors helped with the writing of the article.
Conflict-of-interest statement: None declared.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Enrique Gutiérrez-Ibañes, MD, Instituto de Investigación Sanitaria Gregorio Marañón, Servicio de Cardiología, Departamento de Medicina, Universidad Complutense de Madrid, Calle Dr Esquerdo 46, 28007 Madrid, Spain. firstname.lastname@example.org
Received: May 23, 2015
Peer-review started: May 26, 2015
First decision: June 24, 2015
Revised: July 10, 2015
Accepted: July 24, 2015
Article in press: July 27, 2015
Published online: September 26, 2015