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, Sangath , Goa , India
3. National Institute of Mental Health and Neurosciences , Bengaluru , India
4. Department of Psychology, University of Bath , Bath , UK
5. Department of Psychology, Health and Professional Development, Oxford Brookes University , Oxford , UK
6. School of Health Sciences, University of East Anglia , Norwich , UK