Ma, Weijiang
Ling, Feng
Yang, Limin
Yang, Shaojun
Li, Xu
Ma, Jianqiang
Liu, Jia
Article History
Received: 29 December 2019
Accepted: 22 May 2020
First Online: 6 June 2020
Compliance with Ethical Standards
: All authors contributed substantially to this study. The institution from where the article comes is a guarantor of the content. The study was approved by the Institutional Review Board of the Second Affiliated Hospital of Kunming Medical University.
: The authors declared no conflicts of interest concerning the authorship and /or publication of this article.