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. 2003 Sep;58(9):825.
doi: 10.1136/thorax.58.9.825.

Usefulness of GOLD classification of COPD severity

D Köhler, J Fischer, F Raschke, B Schönhofer

Usefulness of GOLD classification of COPD severity

D Köhler et al. Thorax. 2003 Sep.
No abstract available

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