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- [25] Efficacy Of Budesonide/formoterol Pressurized Metered-Dose Inhaler (bud/fm Pmdi) By Exacerbation History At Baseline: Post Hoc Analysis Of A 1-Year, Randomized Controlled Clinical Trial In Patients With Chronic Obstructive Pulmonary Disease (COPD) AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE, 2013, 187