Dinesh Bhugra1, Antonio Ventriglio2, K S Bhui3. 1. Institute of Psychiatry, King's College London, Health Service & Population Research Department, London, UK. 2. Department of Clinical and Experimental Medicine, University of Foggia, Foggia 71100, Italy. Electronic address: a.ventriglio@libero.it. 3. Cultural Psychiatry & Epidemiology, Wolfson Institute of Preventive Medicine, Queen Mary University of London, London.