1. Postdoctoral Fellow, Department of Psychiatry, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario; Lecturer, Department of Psychiatry, University of Toronto, Toronto, Ontario
2. Director of OCD and Related Disorders, Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Ontario; Associate Professor, Department of Psychiatry, University of Toronto, Toronto, Ontario
3. Research Assistant, Anxiety Disorders Clinic, Centre for Addiction and Mental Health, Toronto, Ontario
4. Director of Research, Department of Psychiatry, Sunnybrook Health Sciences Centre, Toronto, Ontario; Research Scientist, Sunnybrook Research Institute, Toronto, Ontario; Associate Professor, Department of Psychiatry, University of Toronto, Toronto, Ontario