Huang, Zhengwei
Nicholas, Stephen
Yang, Yong
Chen, Xiaoping
Maitland, Elizabeth
Ma, Yong
Shi, Xuefeng
Article History
Received: 16 June 2021
Accepted: 11 February 2022
First Online: 19 February 2022
Declarations
:
: Since the claims data we used was an anonymized and secondary database, human participants are not directly involved in the study, and the informed consent was exempted. The Ethics Committee of Beijing University of Chinese Medicine (No.2019BZHYLL0201) has waived the requirement of informed consent for the study. All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors stated that they had no interests which might be perceived as posing a conflict or bias.