1. King's College London, Institute of Psychiatry; Health Service and Population Research Department; Box PO29, David Goldberg Centre De Crespigny Park London UK SE5 8AF
2. King's College London; Florence Nightingale School of Nursing and Midwifery; 2.25, James Clerk Maxwell Building 57 Waterloo Road London UK SE1 8WA
3. National Institute of Mental Health, National Center of Neurology and Psychiatry (NCNP); Department of Psychiatric Rehabilitation; 4-1-1 Ogawa-Higashi Kodaira Tokyo Japan 187-8553
4. Ulm University; Department of Psychiatry II; Ulm Germany