Funding for this research was provided by:
Department of Biotechnology, Government of India (BT/PR14378/MED/30/535/2010)
Received: 4 January 2021
Accepted: 7 February 2021
First Online: 27 February 2021
Ethics approval and consent to participate
: Pre-informed written consent was obtained from all the individuals recruited for the study. The study was approved by Ethical Committee, Department of Anthropology, University of Delhi.
: Not applicable.
: The authors declare that they have no competing interests.