P272 Improvements in Exacerbation Rates With Single Inhaler Triple Therapy Versus Dual Ics/Laba Therapy in Patients With Advanced Chronic Obstructive Pulmonary Disease (Copd): Subgroup Analyses of the Phase Iii Fulfil Study

doi 10.1136/thoraxjnl-2017-210983.471
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BMJ Publishing Group Ltd and British Thoracic Society