Zhang, Xiaobo
Yu, Yinhui
Zhang, Guangbin
Zhou, Yanwen
Zhao, Guangyu
Chen, Maosheng
Wang, Yong
Zhu, Siquan
Zhang, Hong
Yao, Ke
Article History
Received: 30 September 2018
Accepted: 1 March 2019
First Online: 14 March 2019
Ethics approval and consent to participate
: This study was approved by the ethics committees of all the participating centers (Additional file InternalRef removed) and adhered to the principles of the Declaration of Helsinki. Written informed consent was obtained from all individual participants included in the study.
: Not applicable.
: The authors declare that they have no competing interest.
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