Efficacy and Safety of Tiotropium Compared to Salmeterol and Placebo in Patients With Chronic Obstructive Bronchitis (COPD)
Clinical trial NCT02173691 · COMPLETED
Trial details
- NCT number
- NCT02173691
- Sponsor
- Boehringer Ingelheim
- Status
- COMPLETED
- Phase
- Phase 3
- Study type
- INTERVENTIONAL
- Start date
- 1999-02-01
- Primary completion
- 2000-05-01
- Enrollment
- 584
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