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You are here: Home → Research → Publication → Tiotropium versus salmeterol for the prevention of exacerbations of COPD.

Tiotropium versus salmeterol for the prevention of exacerbations of COPD.

N Engl J Med. 364(12):1093-1103.

Vogelmeier C, Hederer B, Glaab T, Schmidt H, Rutten-van Mölken MP, Beeh KM, Rabe KF, Fabbri LM; POET-COPD Investigators. (2011).

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