Natural history of COPD

Symposium
Chairs: M. Miller (Birmingham, United Kingdom), I. Annesi-Maesano (Paris, France)
Aims: Give insights into the past and present of the natural history of COPD; highlight different risk factors of forced expiratory volume in one second (FEV1) decline; and list possible modifiers for FEV1.

The natural history of COPD: the past and the present J. Soriano (Bunyola, Mallorca Illes Balear, Spain)
The Fletcher and Peto curves, 30 years later R. Kohansal (Vienna, Austria)
What defines abnormal lung function? D. Mannino (Lexington, Ky, United States of America)