Received: 7 April 2021
Accepted: 25 June 2021
First Online: 23 July 2021
: This work has been accepted by the institutional research and ethics committee of Government Medical College, Kozhikode (Calicut), on 26 October 2017 (reference number GMCKKD/RP 2017/EC/176).Consent to participate has been approved also by the same committee.
: Not applicable
: The authors have no conflict of interests.