Funding for this research was provided by:
Wu Jieping Medical Foundation (320.6750.16023)
Text and Data Mining valid from 2018-11-14
Received: 11 August 2017
Accepted: 4 October 2018
First Online: 14 November 2018
Ethics approval and consent to participate
: All procedures performed in the study involving human participants were in accordance with the Declaration of Helsinki. The study was approved by the Ethics Committee of Peking Union Medical College Hospital (approval number: ZS-1062; date: 2016-4-26). Written informed consent was obtained from each participant.
: Not applicable.
: The authors declare that they have no competing interests.
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