Funding for this research was provided by:
Sichuan Medical Association (Q17049)
Bureau of Science and Technology Nanchong (18SXHZ0360)
Article History
Received: 11 May 2020
Accepted: 27 July 2020
First Online: 8 August 2020
Compliance with ethical standards
:
: The authors declare no conflicts of interest regarding the publication of this paper.