Chow, Sharon S. W.
Chan, Tommy C. Y.
Ng, Alex L. K.
Kwok, Alvin K. H.
Article History
Received: 5 October 2017
Accepted: 22 March 2018
First Online: 28 March 2018
Compliance with ethical standards
:
: All authors have no conflict of interest to declare.
: 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.