1. Pulmonology Department, Respiratory Medicine, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
2. Doctoral Program in Health Sciences, University of Alcalá, 28871 Alcalá de Henares, Spain
3. Department of Medicine and Medical Specialties, University of Alcalá, 28871 Alcalá de Henares, Spain
4. Geriatric Medicine, Hospital Universitario de Guadalajara, 19002 Guadalajara, Spain
5. SAVANA, 28013 Madrid, Spain
6. Respiratory Medicine, Hospital Universitario Príncipe de Asturias, 28805 Alcalá de Henares, Spain