Funding for this research was provided by:
National Natural Science Foundation (81871637)
Received: 18 September 2019
Accepted: 30 January 2020
First Online: 11 February 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of the First Affiliated Hospital of China Medical University (Shenyang, China). Written informed consent was provided by all patients.
: Not applicable.
: The authors declare that they have no competing interests.