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Paper published by Dr Christoph Hallmann:
Original Research
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Tiotropium HandiHaler® and Respimat® in COPD: a pooled safety analysis
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Halpin DMG, Dahl R, Hallmann C, Mueller A, Tashkin D
International Journal of Chronic Obstructive Pulmonary Disease 2015, 10:239-259
Published Date: 5 February 2015