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Authors
Yi, Xingyang
Zhou, Qiang
Wang, Chun
Lin, Jing
Chai, Zhenxiao
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Article History
Received: 2 June 2018
Revised: 22 July 2018
Accepted: 3 August 2018
First Online: 20 August 2018
Compliance with ethical standards
:
: The study protocol was approved by the Ethics Committee at the participating hospitals in accordance with the principles stated in the Declaration of Helsinki. Written informed consent was obtained from all the participants.
: The authors declare that they have no competing interest.
