Cheung, Johnny T. K.
Au, Doreen W. H.
Chan, Wallace C. H.
Chan, Jenny H. Y.
Ng, Kenway
Woo, Jean
Article History
Received: 15 November 2017
Accepted: 12 April 2018
First Online: 20 April 2018
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki. Ethics approval was granted by the Survey and Behavioural Research Ethics Committee of the Chinese University of Hong Kong. Written consent was obtained before the start of the survey.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.