Received: 26 January 2020
Accepted: 18 March 2021
First Online: 31 March 2021
: The study was approved by the Institutional Ethical Review Board, B. P. Koirala Institute of Health Sciences (BPKIHS), Nepal (Ref: ACD.599/068/069) and written informed consent for the study was obtained from patients by an investigator (AS).
: Not applicable.
: The authors declare that they have no competing interests.