Zhao, Quchuan
Chi, Tianyu
Article History
Received: 14 June 2021
Accepted: 15 March 2022
First Online: 23 March 2022
Declarations
:
: The study protocol was done in accordance to the ethical guidelines of the 1975 Helsinki Declaration. This study protocol was approved by the ethics committee of Xuanwu Hospital of Capital Medical University. Informed consent was obtained from each patient included in the study, which was approved by the ethics committee at our hospital.
: Not applicable.
: The authors declare that they have no competing interests.