Ip, Patrick
Tso, Winnie
Rao, Nirmala
Ho, Frederick Ka Wing
Chan, Ko Ling
Fu, King Wa
Li, Sophia Ling
Goh, Winnie
Wong, Wilfred Hing-sang
Chow, Chun Bong
Article History
Received: 28 December 2016
Revised: 29 May 2017
Accepted: 30 May 2017
First Online: 15 March 2018
Compliance with ethical standards
:
: The study was approved by the ethical committee of the Institutional Review Board of the University of Hong Kong. Informed written consent was obtained from the parents of each participant. Study procedure was carried out in accordance with the approved guidelines.
: No financial or non-financial benefits have been received or will be received from any party related directly or indirectly to the subject of this article.