Xie, Weiji
Xie, Yi
Lin, Zhijun
Xu, Xiaochang
Zhang, Yimin
Article History
Received: 20 December 2018
Accepted: 30 April 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: The present study was approved by the ethics committee of the The Sixth Affiliated Hospital of Sun Yat-sen University and adhered to the tenets of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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