Funding for this research was provided by:
Universiti Kebangsaan Malaysia (GUP-2017-002)
Received: 26 February 2020
Accepted: 3 September 2020
First Online: 11 September 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Research Committee, Universiti Kebangsaan Malaysia (UKM PPI/111/8/JEP-2018-268), and patients were briefed and written informed consent was obtained.
: Not applicable.
: The authors declare that they have no competing interests.