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Initial maternal serum human chorionic gonadotropin levels in pregnancies achieved after assisted reproductive technology are higher after preimplantation genetic screening and after frozen embryo transfer: a retrospective cohort

Crossref DOI link: https://doi.org/10.1007/s10815-017-0987-2

Published Online: 2017-06-21

Published Print: 2017-10

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

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