1. Centre for Global Mental Health, Department of Population Health, London School of Hygiene and Tropical Medicine , London , UK
2. Addictions and Related Research Group (ARG) , Sangath , India
3. Department of Psychology, University of Bath , Bath , UK
4. National Institute of Mental Health and Neurosciences , Bengaluru , India
5. School of Health Sciences, University of East Anglia , Norwich , UK