Yang, Xin
Li, Xiaodong
Wang, Yanjie
He, Xiaojing
Zhao, Yang
Funding for this research was provided by:
National Twelfth Five-Year Plan for Science and Technology (2012 BAI32B00)
Article History
Received: 10 January 2017
Accepted: 14 June 2018
First Online: 26 June 2018
Ethical approval and consent to participate
: The survey was approved by the Clinical Research Ethics Committee of the Peking University People’s Hospital. A written consent was obtained from all participants of the survey.
: All authors reviewed the final draft and have given their consent for publication of the survey results.
: The authors declare that they have no competing interests.
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