Lim, Raymond Boon Tar
Cheung, Olive N. Y.
Tham, Dede Kam Tyng
La, Hanh Hao
Win, Thein Than
Chan, Roy
Wong, Mee Lian
Funding for this research was provided by:
Ministry of Health -Singapore (CDPHRG12NOV020)
Article History
Received: 18 October 2016
Accepted: 9 April 2018
First Online: 16 April 2018
Ethics approval and consent to participate
: Ethics approval was obtained from the National University of Singapore Institutional Review Board (approval certificate number NUS 2159). All participants gave informed consent to participate in the study.
: All participants gave consent for publication.
: The authors declare that they have no competing interests.
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