Received: 26 March 2019
Accepted: 24 April 2020
First Online: 6 July 2020
Ethics approval and consent to participate
: Ethical approval for this study was obtained from the Institutional Ethical Committee, KMCT Medical College Hospital, Kozhikode, Kerala, India.
: Not applicable as this manuscript contains no personal information of the study participants.
: The authors declare no conflicts of interest.