Original Research

A randomized, blinded study to evaluate the efficacy and safety of umeclidinium 62.5 µg compared with tiotropium 18 µg in patients with COPD

Feldman G, Maltais F, Khindri S, Vahdati-Bolouri M, Church A, Fahy WA, Trivedi R

International Journal of Chronic Obstructive Pulmonary Disease 2016, 11:719-730

Published Date: 7 April 2016