Guan, Bingsheng
Chong, Tsz Hong
Peng, Juzheng
Chen, Yanya
Wang, Cunchuan
Yang, Jingge http://orcid.org/0000-0002-5510-8241
Article History
First Online: 22 March 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required.
: Given that there are no interventions implemented on patients, ethical approval is not required.