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Address correspondence to Dr. Vythilingum, MRC Research Unit on Anxiety Disorders, Department of Psychiatry, University of Stellenbosch, P.O. Box..."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeanine","family":"van Kradenburg","sequence":"additional","affiliation":[{"name":"Received October 19, 2000; revised March 30, 2001; accepted April 3, 2001. From the MRC Research Unit on Anxiety and Stress Disorders (b.v., j.v.k., c.w., d.j.s.) and the Department of Nuclear Medicine (j.w., b.v.h.), University of Stellenbosch, Tygerburg, South Africa; and the Department of Psychiatry, University of Florida, Gainesville, Florida (d.j.s.). Address correspondence to Dr. Vythilingum, MRC Research Unit on Anxiety Disorders, Department of Psychiatry, University of Stellenbosch, P.O. 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