So, Ho http://orcid.org/0000-0001-7113-9390
Wong, Victor Tak Lung
Lao, Virginia Weng Nga
Pang, Hin Ting
Yip, Ronald Man Lung
Article History
Received: 18 January 2018
Revised: 16 April 2018
Accepted: 20 April 2018
First Online: 30 April 2018
Compliance with ethical standards
: Ethical approval was granted from the local ethical committee (reference number: KC/KE-17-0103/ER-3).
: None.