Cluster A

COPD and co-morbidities

• Chronic obstructive pulmonary disease with and without rheumatoid arthritis: severe exacerbations and death in a population-based cohort 
• Depressive symptoms in relationship with smoking cessation in patients with chronic obstructive pulmonary disease
• Use of oral corticosteroids and the risk of venous thromboembolism and mortality in patients with Cronic Obstructive Pulmonary Disease
• The impact of social distancing on hospital admissions for severeacute exacerbation of chronic obstructive pulmonary disease (COPD) and mortalityin patients with severe and very severe COPD