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Letters to the editor
Health outcomes following treatment for 6 months with once daily tiotropium compared with twice daily salmeterol in patients with COPD
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We wish to clarify issues raised by your recent letter regarding the abovementioned paper published in May 2003 in Thorax (2003;58:399–404). Our intention was to notify the editors and to reference the paper by Donohue et al appearing in Chest. We believe this is evidenced by our declaring in the cover letter that the data from one of the two trials were under review. However, we wish to apologise that we did not follow this up and did …