Funding for this research was provided by:
National Natural Science Foundation of China (81570363)
Shanghai Hospital Development Center Project (SHDC12017X24)
Text and Data Mining valid from 2018-08-07
Received: 7 March 2018
Accepted: 3 August 2018
First Online: 7 August 2018
Ethics approval and consent to participate
: Approval of the Ethics Committee of Shanghai Jiao Tong University Affiliated Sixth People’s Hospital East was obtained before the start of the work, and each participant signed written consent form.
: Not applicable.
: The authors declare that they have no competing interests.
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