1. Department of Psychology; Adult Anxiety Clinic; Temple University; Philadelphia Pennsylvania
2. Department of Psychology; Boston University; Boston Massachusetts
3. Department of Psychiatry; Columbia University College of Physicians and Surgeons and the Medical Research Network; New York New York
4. Anxiety Disorders Clinic; New York State Psychiatric Institute and Department of Psychiatry; Columbia University College of Physicians and Surgeons; New York New York
5. Department of Psychology and the Institute for Mental Health Research; University of Texas at Austin; Austin Texas
6. Department of Psychiatry; University of California at San Diego; La Jolla California
7. Department of Family & Preventive Medicine; University of California at San Diego; La Jolla California
8. Department of Psychiatry; Harvard University; Cambridge Massachusetts
9. Department of Psychology; University of California at Los Angeles; Los Angeles California