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Authors
Chen, Lumin
Miao, Chong
Chen, Yanling
Han, Xian
Lin, Ziying
Ye, Hong
Wang, Chengyi
Zhang, Huijie
Li, Jingjing
Tang, Qiuyu
Dong, Yuan
Bai, Meng
Zhu, Yibing
Liu, Guanghua https://orcid.org/0000-0001-9692-5857
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Article History
Received: 13 January 2021
Accepted: 7 April 2021
First Online: 23 April 2021
Declarations
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: The study was approved by the ethics committee of Fujian Maternity and Child Health Hospital. This study has been registered in China, with the registration number being ChiCTR2000033019.As a retrospective study, our study had no involvement in personal identifiers or patient contact, in which case informed consent could be exempted.
: As a retrospective study, our study had no involvement in personal identifiers or patient contact, in which case consent for publication could be exempted.
: The authors declare that they have no conflict of interest.
