Liu, Ke
Lai, Timothy Y. Y.
Chiang, Sylvia W. Y.
Chan, Vesta C. K.
Young, Alvin L.
Tam, Pancy O. S.
Pang, Chi Pui
Chen, Li Jia
Article History
Received: 11 August 2014
Accepted: 20 October 2014
First Online: 12 November 2014
Competing interests
: The authors declare no competing financial interests.