Funding for this research was provided by:
Ministry of Higher Education (TRGS/2/2014/UKM/02/3)
Received: 25 November 2018
Accepted: 17 July 2019
First Online: 24 July 2019
Ethics approval and consent to participate
: The ethical approval was obtained from the Institutional Review Board, Universiti Kebangsaan Malaysia Medical Research Ethics Committee prior to the commencement of the study (Reference no: UKM FPR.4/244/TRGS/2/2014/UKM/02/3). All patients provided written informed consent to take part in the clinical trial. The clinical trial information sheath was given to all patients that include the objectives, methodology and purpose of the study using a simple layman terms.
: Not applicable.
: The authors declare that they have no competing interests.