**Author details**

Kim Ho Yeap1 \*, Muammar Mohamad Isa<sup>2</sup> and Siu Hong Loh1

1 Universiti Tunku Abdul Rahman, Jalan Universiti, Kampar, Perak, Malaysia

2 Universiti Malaysia Perlis, Jalan Wang Ulu Arau, Kangar, Perlis, Malaysia

\*Address all correspondence to: yeapkh@utar.edu.my

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