Received: 21 April 2021
Accepted: 1 August 2021
First Online: 9 August 2021
: This research has obtained ethical approval with the reference number KKM.NIHSEC.P18-2350(7) and registered under National Medical Research Registry (NMRR-18-3132-44576), Ministry of Health, Malaysia. Consent to participate is not applicable since retrospective data acquired under ethics approval by the Medical Research Ethics Committee of Ministry of Health, Malaysia.
: Not applicable.
: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.