Validity of COPD diagnoses reported through nationwide health insurance systems in the People’s Republic of China
<h4>Background</h4> <p>COPD is the fourth leading cause of death worldwide, with particularly high rates in the People’s Republic of China, even among never smokers. Large population-based cohort studies should allow for reliable assessment of the determinants of diseases, which is...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Published: |
Dove Medical Press
2016
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