Comparison of Safety and Efficacy of Berodual® Administered Via the Respimat® Device With That Administered Via the Metered Dose Inhaler (MDI) in Patients With Chronic Obstructive Pulmonary Disease (COPD)
Conditions
- Pulmonary Disease, Chronic Obstructive
Interventions
- DRUG: Berodual® Respimat ® high dose
- DRUG: Berodual® Respimat ® low dose
- DRUG: Berodual® MDI
- DRUG: Placebo
Sponsor
Boehringer Ingelheim