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Authors
Li, Zheng
Wang, Jingxue
Chen, Qian
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Article History
Received: 20 November 2020
Accepted: 20 April 2021
First Online: 2 May 2021
Declarations
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: This study was approved by the Ethics Committee of Peking University First Hospital prior to the commencement of the study. The study was conducted according to the principles of the Declaration of Helsinki and its amendments.
: Written informed consent was obtained from the patient for publication of this case report. A copy of the written consent form is available for review by the Editor of BMC Pregnancy and Childbirth, if needed.
: The authors declare that they have no competing interests.
