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International Journal of Chronic Obstructive Pulmonary Disease Volume 12, 2017 - Issue
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Original Research

Umeclidinium/vilanterol as step-up therapy from tiotropium in patients with moderate COPD: a randomized, parallel-group, 12-week study

Edward M Kerwin1 Clinical Research Institute of Southern Oregon, Medford, ORCorrespondence[email protected]
,
Chris J Kalberg2 Respiratory Department, GlaxoSmithKline, Research Triangle Park, NC, USA
,
Dmitry V Galkin2 Respiratory Department, GlaxoSmithKline, Research Triangle Park, NC, USA
,
Chang-Qing Zhu3 Clinical Statistics, GlaxoSmithKline, Stockley Park, Uxbridge, Middlesex
,
Alison Church2 Respiratory Department, GlaxoSmithKline, Research Triangle Park, NC, USA
,
John H Riley4 Respiratory Department, GlaxoSmithKline, Stockley Park, Uxbridge, Middlesex, UK
&
William A Fahy4 Respiratory Department, GlaxoSmithKline, Stockley Park, Uxbridge, Middlesex, UK
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Pages 745-755 | Published online: 24 Feb 2017

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