Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Zhou J, Huang H, Liu S, Yu P, Wan Q. Ther Clin Risk Manag. 2020;16:321.
Due to a processing error the link for the British Medical Journal Open (BMJ Open) article described was missing. The link for the BMJ Open article has been provided here: http://dx.doi.org/10.1136/bmjopen-2018-024473.
View on publisher site
PDF (149.6 KB)
