Funding for this research was provided by:
National Natural Science Foundation of China (81901766, 81871373)
Received: 9 October 2020
Accepted: 15 February 2021
First Online: 23 February 2021
Ethics approval and consent to participate
: Written informed consent was obtained from all patients before enrollment. The study protocol was approved by the China Medical University Ethics Committee and was conducted in line with the ethical guidelines of the 1975 Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.