Funding for this research was provided by:
Ministry of Science and Technology of the People's Republic of China (2018YFC1002900)
National Natural Science Foundation of China (81520108013, 81771613, 81901508)
Text and Data Mining valid from 2020-02-10
Received: 31 August 2019
Accepted: 30 January 2020
First Online: 10 February 2020
Ethics approval and consent to participate
: This study was approved by the First Affiliated Hospital of Chongqing Medical University. All participants have signed a informed consent before recruitment to the study.
: Participants were provided a study overview and verbal consent was attained.
: The authors declare that they have no competing interests.