An Efficacy and Safety Evaluation of Tiotropium add-on Therapy in Patients With Severe Persistent Asthma
Status:
Completed
Trial end date:
1969-12-31
Target enrollment:
Participant gender:
Summary
The primary objective of this study is to examine efficacy and safety of tiotropium compared
to plac ebo as add-on therapy in severe asthmatics according to GINA step 4 classification