Fu, Wenhao
Li, Jiajia
Fang, Feng
Zhao, Dan
Hao, Wenting
Li, Shixue
Article History
Received: 21 March 2021
Accepted: 27 September 2021
First Online: 22 October 2021
Declarations
:
: Before the investigation, signed informed consent was obtained from each prospective participant, and the Academic Research Ethics Committee of Shandong University validated this form of consent and approved the research proposal (access number: 20190101). All methods were carried out in accordance with relevant guidelines and regulations.
: Not applicable.
: The authors declare that they have no conflicts of interest.