Funding for this research was provided by:
National Natural Science Foundation of China (81172743)
Received: 5 May 2020
Accepted: 15 July 2020
First Online: 31 July 2020
Ethics approval and consent to participate
: This study was approved by the Human Research and Ethics Committee of Harbin Medical University. Informed written consent was provided by all the subjects.
: Not applicable.
: The authors declare that they have no competing interests.