PT  - JOURNAL ARTICLE
AU  - D.J. Powrie
AU  - T.M.A. Wilkinson
AU  - G.C. Donaldson
AU  - P. Jones
AU  - K. Scrine
AU  - K. Viel
AU  - S. Kesten
AU  - J.A. Wedzicha
TI  - Effect of tiotropium on sputum and serum inflammatory markers and exacerbations in chronic obstructive pulmonary disease
AID  - 10.1183/09031936.00023907
DP  - 2007 May 15
TA  - European Respiratory Journal
4099  - http://erj.ersjournals.com/content/early/2007/05/15/09031936.00023907.short
4100  - http://erj.ersjournals.com/content/early/2007/05/15/09031936.00023907.full