Comment on

• A long-term evaluation of once-daily inhaled tiotropium in chronic obstructive pulmonary disease.

  Casaburi R, Mahler DA, Jones PW, Wanner A, San PG, ZuWallack RL, Menjoge SS, Serby CW, Witek T Jr. Casaburi R, et al. Eur Respir J. 2002 Feb;19(2):217-24. doi: 10.1183/09031936.02.00269802. Eur Respir J. 2002. PMID: 11866001 Clinical Trial.
• Improved health outcomes in patients with COPD during 1 yr's treatment with tiotropium.

  Vincken W, van Noord JA, Greefhorst AP, Bantje TA, Kesten S, Korducki L, Cornelissen PJ; Dutch/Belgian Tiotropium Study Group. Vincken W, et al. Eur Respir J. 2002 Feb;19(2):209-16. doi: 10.1183/09031936.02.00238702. Eur Respir J. 2002. PMID: 11871363 Clinical Trial.