Funding for this research was provided by:
Received: 7 February 2021
Accepted: 9 September 2021
First Online: 17 September 2021
: This study was conducted in accordance with the Declaration of Helsinki. Ethical permission was granted by the Ethics Review Committee, Faculty of Medicine, University of Colombo, Sri Lanka (EC-18-108). Permission was obtained from the hospital authorities to collect the data. Written informed consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.