A Randomised, Double Blind, Parallel Group Study to Assess the Efficacy and Safety of 12 Weeks of Once Daily, Orally Inhaled, Co-administration of Olodaterol 5µg (Delivered by the Respimat® Inhaler) and Tiotropium 18µg (Delivered by the HandiHaler®) Compared to Once Daily, Orally Inhaled, Co-administration of Placebo (Delivered by the Respimat® Inhaler) and Tiotropium 18µg (Delivered by the HandiHaler®) in Patients With Chronic Obstructive Pulmonary Disease (COPD)[ANHELTO TM 1]

The overall objective of this study is to assess efficacy and safety of 12 weeks, once daily, orally inhaled co-administration of olodaterol 5 µg (delivered by the Respimat® Inhaler) and tiotropium (delivered by the Handihaler® as Spiriva Handihaler®), compared to tiotropium (Spiriva Handihaler®) monotherapy on lung function in patients with COPD.