Published on in Vol 5, No 2 (2021): February
1 Department of Respiratory Medicine, Instituto Ramón y Cajal de Investigación Sanitaria, University of Alcala de Henares, Madrid, Spain
2 Department of Respiratory Medicine, Hospital Universitario 12 de Octubre, Institute for Health Research (i+12), Complutense University of Madrid, Madrid, Spain
3 Department of Respiratory Medicine, Hospital Universitario Puerta de Hierro, Autonoma University of Madrid, Majadahonda, Spain
4 Department of Respiratory Medicine, Hospital Universitario La Princesa, Autónoma University of Madrid, Madrid, Spain
5 Department of Respiratory Medicine, Hospital Universitario Lucus Augusti, University of Lugo, Lugo, Spain
6 Department of Respiratory Medicine, Hospital de la Santa Creu i Sant Pau, Institut d’Investigació Biomédica Sant Pau, Autònoma University of Barcelona, Barcelona, Spain
7 Department of Respiratory Medicine, Laredo Hospital, Laredo, Spain
8 Department of Respiratory Medicine, Hospital Universitario Reina Sofia, University of Cordoba, Córdoba, Spain
9 Department of Respiratory Medicine, Hospital Universitario de Salamanca, University of Salamanca, Salamanca, Spain
10 Department of Respiratory Medicine, Hospital Universitario Central de Asturias, University of Oviedo, Oviedo, Spain
11 Department of Health Information Management, Fundación Jimenez Diaz, Madrid, Spain
12 Unit of Clinical Biostatistics, Instituto Ramón y Cajal de Investigación Sanitaria, Consorcio Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública, University of Alcala de Henares, Madrid, Spain