Original Research

The effect of COPD severity and study duration on exacerbation outcome in randomized controlled trials

Eriksson G, Calverley PM, Jenkins CR, Anzueto AR, Make BJ, Lindberg M, Fagerås M, Postma DS

International Journal of Chronic Obstructive Pulmonary Disease 2017, 12:1457-1468

Published Date: 15 May 2017