Ng, Ting Kin http://orcid.org/0000-0001-9578-5215
Article History
First Online: 17 November 2017
Compliance with Ethical Standards
:
: 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.
: Ting Kin Ng declares that he has no conflict of interest