Funding for this research was provided by:
Universiti Kebangsaan Malaysia (GGPM2019-024)
Received: 12 December 2019
Accepted: 23 April 2020
First Online: 12 May 2020
Ethics approval and consent to participate
: Ethics approval was obtained from Human Ethics Committee of the Faculty of Medicine, Universiti Kebangsaan Malaysia (UKM FPR.SPI 800–2/28/166/FF-2019-342). All procedures performed in this study involving human participants were in accordance with the 1964 Helsinki declaration and its later amendments. Written informed consent was provided by the participants of the study.
: Not applicable.
: The authors declare that they have no competing interests.