Mei, Youwen
Lin, Yonghong
Luo, Dan
Gao, Lan
He, Li
Article History
Received: 16 October 2017
Accepted: 22 June 2018
First Online: 6 July 2018
Ethics approval and consent to participate
: The authors confirmed that approval of ethics committee of Chengdu women and children’s central hospital had 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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