Article History
Received: 4 June 2020
Accepted: 25 September 2020
First Online: 3 October 2020
Compliance with ethical standards
:
: The authors declare that they have no competing interests.
: Institutional review board approval (IRB) of the Third Affiliated Hospital of Kunming Medical University was obtained for this study. This study was conducted in concordance with the Helsinki Declaration.
: Informed consent included in the study was obtained from individual participants or next of kin of dead patients.
: Agree to publish.