1. Department of Anthropology and Sociology, Ashoka University, Rajiv Gandhi Education City, Sonipat, Haryana 131029, India
2. Psychiatry, Carney Institute for Brain Sciences, Brown University, 164 Angell Street, 4th Floor, Providence, RI 02906, USA
3. Additional Professor, National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, India