Graham Thornicroft is Professor of Community Psychiatry and Head of the Health Service and Population Research Department, Institute of Psychiatry, King's College London, UK.

Norman Sartorius is one of the most prominent and influential psychiatrists of his generation. He has served as Director of the Division of Mental Health at the World Health Organization, and subsequently President of the World Psychiatric Association. He has held professorial appointments at the Universities of Geneva, Prague, New York and Zagreb. He is a member of the Council of the World Psychiatric Association and of the Expert Advisory Panel of the World Health Organization. He is an Honorary Professor of the University of London, a professor at the Universities of Zagreb and Prague and held or holds professorial appointments at the Department of Psychiatry of the University of Geneva and at several other universities in Europe, the USA and China; he is a Senior Associate of the Faculty of the Johns Hopkins School of Public Health in Baltimore. He has written over 300 scientific papers and co-authored or edited over 40 books.