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Ectopic pregnancy risk factors for ART patients undergoing the GnRH antagonist protocol: a retrospective study

Crossref DOI link: https://doi.org/10.1186/s12958-016-0146-0

Published Online: 2016-03-23

Published Print: 2016-12

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

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