Funding for this research was provided by:
Universiti Malaya (UM.C/625/1/HIR/MOHE/DENT/13, PPPC/C1-2015/DGD/21)
Article History
Received: 27 February 2019
Accepted: 11 November 2019
First Online: 21 November 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards (IRB Reference Number: DF CD1410/0086(P)).
: Informed consent was obtained from all individual participants included in the study.