Tian, Sijia
Niu, Shengmei
Zhang, Luxi
Lian, Huixin
Zhou, Ming
Zhang, Xuejiao
Kang, Xuqin
Zhang, JinJun
Funding for this research was provided by:
beijing municipal science and technology project (Z191100004419003)
the national natural science foundation of china (81871455)
Article History
Received: 23 August 2021
Accepted: 31 January 2022
First Online: 11 February 2022
Declarations
:
: The study was approved by Ethics Committee of Beijing Emergency Medical Center (No.2021–001) and the written informed consent was waived.Because at the beginning of the survey, respondents were explicitly asked to give their consent to participate in the survey.
: Not applicable.
: The authors declare that they have no competing interests.