Wen, Lin
Liu, Shan
Cao, Yurong
Li, Guiling
Article History
Received: 26 December 2018
Accepted: 3 February 2019
First Online: 17 June 2019
Compliance with Ethical Standards
:
: Author Lin Wen declares that he has no conflict of interest. Author Shan Liu declares that he has no conflict of interest. Author Yurong Cao declares that he has no conflict of interest. Author Guiling Li declares that he has no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.