Funding for this research was provided by:
National Natural Science Foundation of China (81770276, 81571871)
Received: 23 April 2020
Accepted: 14 May 2020
First Online: 6 June 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the First Affiliated Hospital of Harbin Medical University, code number kyk2020003.
: Not applicable.
: The authors declare that they have no competing interests.