Hou, Liwen
Leung, Patrick http://orcid.org/0000-0003-0423-2346
Cheung, Monit http://orcid.org/0000-0002-0433-4767
Xu, Yongxiang
Article History
First Online: 16 March 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest to submit this manuscript to this journal.
: 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.