Funding for this research was provided by:
Graduate Research and Innovation Projects of Jiangsu Province (CXTDA2017047)
Text and Data Mining valid from 2020-03-17
Received: 19 October 2019
Accepted: 26 February 2020
First Online: 17 March 2020
Ethics approval and consent to participate
: The study was approved by the Wuxi Second People’s Hospital, Nanjing Medical University (ref. 201802) and informed consent was obtained from all subjects.
: Not applicable.
: The authors declare that they have no competing interests.