Seasonal distribution of COPD exacerbations in the Prevention of Exacerbations with Tiotropium in COPD trial.

Rabe, Klaus F; Fabbri, Leonardo M; Vogelmeier, Claus; Kögler, Harald; Schmidt, Hendrik; Beeh, Kai M; Glaab, Thomas.
Chest; 143(3): 711-719, 2013 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23188489