Funding for this research was provided by:
Kementerian Kesihatan Malaysia
Faculty of Medicine, Universiti Kebangsaan Malaysia (FF-2019-124/1)
Received: 13 May 2020
Accepted: 29 October 2020
First Online: 7 November 2020
Ethics approval and consent to participate
: The ethical clearance was obtained from the Research and Ethics Committee of Universiti Kebangsaan Malaysia (Reference no: UKM PP1/111/8/JEP-2019–148).
: Not applicable.
: The authors declare that they have no competing interests.