Hu, Zhi-bing
Zhong, Qiong-qiong
Lu, Ze-xiong
Zhu, Feng
Article History
Received: 15 February 2022
Accepted: 5 May 2022
First Online: 17 May 2022
Declarations
:
: The study was approved by the Guangzhou Medical Ethics Committee of the Chinese Medical Association. Informed consent was obtained from all the participants and from the guardians of death participants before participation. All methods in this study were performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.