Contribution of Authors :
Prof Dr Nur Azurah is the main person who conceived the topic of this project. All authors were involved in planning, executing and supervising the work. Dr Ana Vetriana and Dr Leekmei processed the experimental data and performed the analysis. Dr Leekmei drafted the manuscript which was overlooked by Prof Dr Nur Azurah and Dr Ana Vetriana whom critically appraised the manuscript and corrected any mistakes and thus improved on shortfalls.
All authors aided in interpreting the results and worked on the manuscript. All authors discussed the results and commented on the manuscript.
Ethics approval : This study is approved by the Secretariat for Medical Research & Innovation (SPPI), National University of Malaysia (FF-2018-020). The letter of approval (UKMFPR.4/244/FF-2018-020) was issued on 16 January 2018.
Funding : No external funding was received. All the costs incurred was bear by the main author.