Commentary on "Costs of pharmacotherapy of chronic obstructive pulmonary disease in relation to changing Global Initiative for Chronic Obstructive Lung Disease guidelines (2007, 2011, and 2017 updates)"
Pol Arch Intern Med. 2019 May 31;129(5):299-300.
doi: 10.20452/pamw.14856.
Epub 2019 May 31.