Kerwin, Edward M ELLIPTA Dry Powder Versus Metered-Dose Inhalers in an Optimized Clinical Trial Setting. [electronic resource] - The journal of allergy and clinical immunology. In practice - 1843-1849 p. digital Publication Type: Clinical Trial, Phase IV; Journal Article; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 2213-2201 Standard No.: 10.1016/j.jaip.2019.02.023 doi Subjects--Topical Terms: Administration, InhalationAdultAgedAsthma--drug therapyCross-Over StudiesDry Powder InhalersFemaleHumansMaleMetered Dose InhalersMiddle Aged