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. 2012 Mar 1;12(13):1–47.

Figure 2: COPD Disease Trajectory: Traditional View*.

Figure 2:

*

Abbreviations: COPD, chronic obstructive pulmonary disease; FEV, forced expiratory volume.

Reprinted from BMJ, Vol. 6077; Fletcher C, Peto R: The Natural History of Chronic Airflow Obstruction, p. 1645-1648 with permission from BMJ Publishing Group Ltd.