Received: 14 October 2021
Accepted: 8 December 2021
First Online: 3 January 2022
: This study was approved by Baoding No 1 Central Hospital Research Ethics Committee (-N93). All subjects provided informed consent to take part in the study. All procedures were conducted according to the 1964 Declaration of Helsinki and its amendments.
: Not applicable.
: The authors declare that they have no competing interests.