1 Health Service & Population Research Department, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK dinesh.bhugra@kcl.ac.uk.
2 Department of Mental Health, ASUR, Jesi (AN), Italy; Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy.
3 Department of Psychiatry, Dr. R. N. Cooper Hospital, Mumbai, India.