A one-year trial of tiotropium Respimat® plus usual therapy in COPD patients
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PII: S0954-6111(10)00283-0
doi:10.1016/j.rmed.2010.06.004
© 2010 Elsevier Ltd. All rights reserved.
PII: S0954-6111(10)00283-0
doi:10.1016/j.rmed.2010.06.004
© 2010 Elsevier Ltd. All rights reserved.