Chew, Keng Sheng https://orcid.org/0000-0002-6326-8210
Liaw, Siew Yee
Ahmad Zahedi, Ahmad Zulkarnain
Wong, Shirly Siew Ling
Singmamae, Nariman
Kaushal, Dev Nath
Chan, Hiang Chuan
Article History
Received: 26 June 2019
Accepted: 3 October 2019
First Online: 21 October 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Medical Research and Ethics Committee, Ministry Of Health Malaysia and the study was registered under the Malaysian National Medical Research Register (NMRR, website URL: ) with the research number of NMRR-16-696-39041. Written informed consent was obtained from all participants prior to their participation in this study.
: Not applicable.
: The authors declare that they have no competing interests.