Long‐acting beta<sub>2</sub>‐agonist in addition to tiotropium versus either tiotropium or long‐acting beta<sub>2</sub>‐agonist alone for chronic obstructive pulmonary disease
Article in Cochrane Database of Systematic Reviews (October 2015)
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Article in Cochrane Database of Systematic Reviews (October 2015)
Article in Journal of Prescribing Practice (March 2013)