1. Department of Psychology; University of Manitoba; 190 Dysart Rd. Winnipeg Manitoba R3T 2N2 Canada
2. Department of Psychiatry; Yale University School of Medicine; New Haven CT USA
3. United States Department of Veterans Affairs National Center for Posttraumatic Stress Disorder and Department of Psychiatry; Yale University School of Medicine; New Haven CT USA
4. Department of Psychiatry; University of Manitoba; Winnipeg Manitoba Canada