P254 Once-daily Tiotropium And Olodaterol Fixed-dose Combination Via The Respimat® Improves Outcomes Versus Mono-components In Copd In Two 1-year Studies
P254 Once-daily Tiotropium And Olodaterol Fixed-dose Combination Via The Respimat® Improves Outcomes Versus Mono-components In Copd In Two 1-year Studies