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Prevalence of chronic obstructive pulmonary disease and variation in risk factors across four geographically diverse resource-limited settings in Peru

Crossref DOI link: https://doi.org/10.1186/s12931-015-0198-2

Published Online: 2015-03-18

Published Print: 2015-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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