Tsang, Anderson Chun On http://orcid.org/0000-0003-2758-3253
Hwang, A. C.
Chiu, R. H. Y.
Chan, D. Y. C.
Tsang, F. C. P.
Ho, W. S.
Lee, R.
Leung, G. K. K.
Lui, W. M.
Article History
Received: 3 May 2018
Accepted: 16 August 2018
First Online: 21 August 2018
Compliance with ethical standards
:
: No funding was received for this study.
: The authors declare that they have no conflict of interest.
: All procedures performed in the 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. For this type of study formal consent is not required.
: For this type of retrospective study formal consent is not required.