Funding for this research was provided by:
Study on Key Technical Standards of Emergency Medical Rescue and Integrated System (2019YFF0302303)
Article History
Received: 29 February 2020
Accepted: 18 September 2020
First Online: 28 September 2020
Compliance with Ethical Standards
:
: The authors declare that they have no competing interests.
: This article does not contain any studies with human or animal subjects.
: For this type of study, informed consent is not required.