About the Authors

Tapan Kumar Roy

roy.tapan@gmail.com

Affiliation Department of Population Science and Human Resource Development, Rajshahi University, Rajshahi-6205, Bangladesh

Brijesh P. Singh

Affiliation Faculty of Commerce, Banaras Hindu University, Varanasi-221005, Uttar Pradesh, India

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: TKR. Formal analysis: TKR. Investigation: TKR BPS. Methodology: TKR BPS. Software: TKR. Supervision: TKR BPS. Validation: TKR BPS. Writing – original draft: TKR. Writing – review & editing: TKR.