Funding for this research was provided by:
Chinese Government Scholarship (201806175061)
Received: 19 October 2019
Accepted: 20 February 2020
First Online: 3 June 2020
Ethics approval and consent to participate
: Informed consent was obtained for all participants and studies were approved by the Institutional Review Board at the First Hospital of Jilin University.
: Written informed consent was obtained from all cases for publication of this research. A copy of the written consent is available for review by the Editorial team of this journal.
: The authors declare that they have no competing interests.