Funding for this research was provided by:
Nanjing Medical Science and Technique Development Foundation (QRX17037)
Text and Data Mining valid from 2018-08-22
Received: 7 April 2018
Accepted: 31 July 2018
First Online: 22 August 2018
Ethics approval and consent to participate
: The study was approved by the Ethical Committee at Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School (study number 2017–167-01). The Ethical Committee at Nanjing Drum Tower Hospital Affiliated to Nanjing University Medical School approved the waiver of consent.
: Not applicable.
: The authors declare that they have no competing interests.
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