1. Global Initiative for Chronic Obstructive Lung Disease. Report 2021. Available from: https://goldcopd.org/wp-content/uploads/2020/11/GOLD-REPORT-2021-v1.1-25Nov20_WMV.pdf [accessed 4.10.21].
2. GesEPOC 2021. Spanish COPD Guidelines (GesEPOC) 2021 update diagnosis and treatment of COPD exacerbation syndrome;Soler-Cataluña;Arch Bronconeumol,2021
3. One-year and long-term mortality in patients hospitalized for chronic obstructive pulmonary disease;García-Sanz;J Thorac Dis,2017
4. Markers of disease activity in COPD: an 8-year mortality study in the ECLIPSE cohort;Celli;Eur Respir J,2021
5. COPD in Spain at the start of a new decade;Ancochea;Arch Bronconeumol (Engl Ed),2021