1. Emergency Psychiatry Program, Victoria Hospital, University of Western Ontario, London, Ontario.
2. Lambton County St Thomas Psychiatric Hospital, St. Thomas, Ontario, University of Western Ontario, London, Ontario.
3. St Thomas Psychiatric Hospital, St. Thomas, Ontario, University of Western Ontario, London, Ontario.
4. University Hospital, University of Western Ontario, London, Ontario.
5. General Psychiatry Section, Veteran's Affairs Medical Centre, University of Pennsylvania, Pittsburgh, Pennsylvania.