Institution: | 1. Department of Cardiology, Hospital Universitario Príncipe de Asturias, , Alcalá de Henares, Spain;2. Department of Medicine, Universidad de Alcalá, , Alcalá de Henares, Spain;3. Department of Cardiology, Hospital Universitario Ramón y Cajal, , Madrid, Spain;4. Department of Cardiology, Hospital Universitario Infanta Sofía, , San Sebastián de los Reyes, Spain;5. Department of Cardiology, Hospital Universitario de Guadalajara, , Guadalajara, Spain |