- Ability to withhold LABA therapy : Other than what is provided during the study, LABA therapy is not permitted on the day of Visit 1(Screening and Run-in Visit) and throughout the entire study. The last dose of pre-study LABA and LABA/ICS combinations are to be taken on the day before Visit 1. According to investigators judgement, patients should be able to withhold LABA therapy during the run-in and wash-out period.