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Vaccine-derived poliovirus surveillance in China during 2001–2013: the potential challenge for maintaining polio free status

Crossref DOI link: https://doi.org/10.1186/s12879-017-2849-z

Published Online: 2017-12-02

Published Print: 2017-12

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

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