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 , ES
2 Department of Respiratory Medicine , Hospital Universitario 12 de Octubre, Institute for Health Research (i+12) , Complutense University of Madrid , Madrid , ES
3 Department of Respiratory Medicine , Hospital Universitario Puerta de Hierro , Autonoma University of Madrid , Majadahonda , ES
4 Department of Respiratory Medicine , Hospital Universitario La Princesa , Autónoma University of Madrid , Madrid , ES
5 Department of Respiratory Medicine , Hospital Universitario Lucus Augusti , University of Lugo , Lugo , ES
6 Department of Respiratory Medicine , Hospital de la Santa Creu i Sant Pau, Institut d’Investigació Biomédica Sant Pau , Autònoma University of Barcelona , Barcelona , ES
7 Department of Respiratory Medicine , Laredo Hospital , Laredo , ES
8 Department of Respiratory Medicine , Hospital Universitario Reina Sofia , University of Cordoba , Córdoba , ES
9 Department of Respiratory Medicine , Hospital Universitario de Salamanca , University of Salamanca , Salamanca , ES
10 Department of Respiratory Medicine , Hospital Universitario Central de Asturias , University of Oviedo , Oviedo , ES
11 Department of Health Information Management , Fundación Jimenez Diaz , Madrid , ES
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 , ES