Funding for this research was provided by:
Indian Council of Medical Research (5/3/3/3/2008‑ECD‑I)
Received: 17 August 2020
Accepted: 23 October 2020
First Online: 13 November 2020
Compliance with Ethical Standards
: All authors declare that they have no conflict of interest.
: The study was approved by Institutional Ethics Committee (PGI/DIR/RC/1085/2007).
: Consent was taken from patients while filling predesigned questionnaire.
: All authors make sure that all the data and materials comply with the field standards.