Mei, Youwen
Zhao, Hu
Zhou, Hui
Jing, Huaibo
Lin, Yonghong
Article History
Received: 29 September 2018
Accepted: 16 April 2019
First Online: 2 May 2019
Ethics approval and consent to participate
: The authors confirmed that approval of the ethics committee of Chengdu women and children’s central hospital had been obtained. Written Consent for data to be used in scientific research was also acquired from patients before operation.
: Not applicable.
: All the authors declare that they have no competing interests.
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