Funding for this research was provided by:
Ministry of Higher Education (LRGS 2018-1.)
Received: 1 February 2021
Accepted: 16 March 2021
First Online: 1 April 2021
: This study was approved by Medical Research and Ethics Committee, Ministry of Health Malaysia (NMRR-19-962-47606).
: Not applicable.
: The authors declare that they have no competing interest.