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Prehospital prognosis is difficult in patients with acute exacerbation of chronic obstructive pulmonary disease

Crossref DOI link: https://doi.org/10.1186/s13049-017-0451-4

Published Online: 2017-11-02

Published Print: 2017-12

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

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