Funding for this research was provided by:
UM Learning Improvement and Teaching Enhancement Research (RU013U-2019)
Received: 13 January 2021
Accepted: 5 May 2021
First Online: 7 June 2021
: Written ethical approval was obtained from the Medical Ethics Committee, Faculty of Dentistry, University of Malaya. Reference number: DR CD1918/0106 (L). Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.