Received: 2 August 2021
Accepted: 9 March 2022
First Online: 20 April 2022
: The study protocol is in accordance with the ethical guidelines of the 1975 Declaration of Helsinki and has been approved by the ethics committees at the Hospital of Chengdu University of Traditional Chinese Medicine (No.2017KL-033). All the participants signed the informed consent in writing prior to inclusion in the study, and the access and use of electronic medical records were approved by the Hospital of Chengdu University of Traditional Chinese Medicine.
: Not applicable.
: The authors declare that they have no conflict of interest to disclose.