Received: 25 January 2021
Accepted: 2 June 2021
First Online: 18 June 2021
: Requisite verbal ethical clearance was provided by the Institutional Ethical Clearance Board (IERB) of St. John’s Medical College (number not available). Need for patient consent was waived by the above review board in view of this being a retrospective study.
: Not applicable.
: The authors declare that they do not have any competing interests.