Text and Data Mining valid from 2020-02-07
Received: 6 November 2019
Accepted: 21 January 2020
First Online: 7 February 2020
Ethics approval and consent to participate
: Ethics approval was received from the Medical Research & Ethics Committee, Ministry of Health, Malaysia.
: The data were not directly indicative of the individual patient and observatory in nature, the individual informed consent was waived and approved by the Ethical Committee. The research involved no risk to the subject and did not adversely affect patients right or welfare.
: The authors declare that they have no competing interests.