Acknowledgment

The articles on minimal clinically important differences in outcomes measures in patients with COPD are based on a workshop held in January, 2004. The workshop was sponsored by the National Jewish Medical and Research Center and supported with unrestricted educational grants from Amgen, AstraZeneca LP, Boehringer-Ingelheim Pharmaceuticals, GlaxoSmithKline, Novartis Pharmaceuticals Corporation, and Pfizer Inc. The conference chairs and participants gratefully acknowledge and express their appreciation for this support.