Impact of baseline COPD symptom severity on the benefit from dual versus mono-bronchodilators: an analysis of the EMAX randomised controlled trial.
Ther Adv Respir Dis. 2020 Jan-Dec;14:1753466620968500. doi: 10.1177/1753466620968500.
Ther Adv Respir Dis. 2020.
PMID: 33167780
Free PMC article.