Funding for this research was provided by:
National Natural Science Foundation of China (21317237)
Text and Data Mining valid from 2020-04-15
Received: 6 December 2019
Accepted: 27 March 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: The study project was authorized by the Institutional Review Board (IRB) for Human Subject Research at the First Affiliated Hospital of Jinan University and the approval number was: 2019–011. All participants provided written informed consent prior to beginning the study.
: Not applicable.
: The authors declare that they have no competing interests.