Received: 31 March 2020
Accepted: 4 May 2020
First Online: 11 June 2020
Ethics approval and consent to participate
: This research was registered with National Medical Research Registry (NMRR) and it was approved by the Malaysian Institutional Review Board (IRB)/ Independent Ethics Committee (IEC) with NMRR ID of NMRR-18-1638-42,105 (IIR). The study was approved on 20 July 2018.
: Not Applicable.
: All authors have none to declare.