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Original research
Association between 7-day serum β-hCG levels after frozen–thawed embryo transfer and pregnancy outcomes: a single-centre retrospective study from China

Authors

  1. Correspondence to Professor Zhengao Sun; sunzhengao77{at}126.com
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Citation

Yuan L, Yu L, Sun Z, et al
Association between 7-day serum β-hCG levels after frozen–thawed embryo transfer and pregnancy outcomes: a single-centre retrospective study from China

Publication history

  • Received November 17, 2019
  • Revised June 4, 2020
  • Accepted July 16, 2020
  • First published October 10, 2020.
Online issue publication 
October 10, 2020

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