1. London Health Sciences Centre, Victoria Hospital; University of Western Ontario; 800 Commissioners Road East PO BOX 5010 London Ontario Canada
2. University of Edinburgh; Division of Psychiatry; Royal Edinburgh Hospital Edinburgh UK EH10 5HF
3. Royal Victoria Infirmary; Department of Psychiatry, Leazes Wing; Queen Victoria Rd Newcastle-upon-Tyne Tyne and Wear UK NE1 4LP
4. University of Oxford/Warneford Hospital; Department of Psychiatry; Oxford UK OX3 7JX
5. Imperial College London; Division of Experimental Medicine, Centre for Mental Health; St Dunstan's Road London UK W6 8RP