Funding for this research was provided by:
Ministry of Higher Education (14-554-20427)
Received: 21 March 2020
Accepted: 1 July 2020
First Online: 9 July 2020
Ethics approval and consent to participate
: The necessary approval was obtained from UPM ethic committee. The study was conducted in accordance to the Declaration of Helsinki in its currently applicable version, the guidelines of the International Conference on Harmonization of Good Clinical Practice (ICH-GCP) and coordination with the Health Ministry of Malaysia was fulfilled based on the applicable Malaysian laws (National Medical Research Register, (NMRR)). Consent has been obtained from each participant after full explanation of the purpose and nature of all procedures used. Ref. no: UPM/TNCPI/RMC/JKEUPM /184.108.40.206/F1.
: Not applicable.
: The authors declare that they have no competing interests.