Funding for this research was provided by:
Department of Biotechnology, Government of India (BT/IN/Indo-UK/AMR/04/AK/2018-19)
Received: 16 November 2022
Accepted: 13 April 2023
First Online: 1 May 2023
: Ethical approval for the study was obtained from the Ethical Committee of Vallabhbhai Patel Chest Institute (VPCI/DIR/PS/IHTC/2018), Delhi University, Delhi. Informed consent was taken prior to the interview.
: Not applicable.
: Authors have declared no conflict of interest.