[1] Temple Univ, Adult Anxiety Clin, Dept Psychol, Philadelphia, PA 19122 USA
[2] Boston Univ, Dept Psychol, Boston, MA 02215 USA
[3] Columbia Univ Coll Phys & Surg, Dept Psychiat, New York, NY 10032 USA
[4] Med Res Network, New York, NY USA
[5] Columbia Univ Coll Phys & Surg, New York State Psychiat Inst, Anxiety Disorders Clin, New York, NY 10032 USA
[6] Univ Texas Austin, Dept Psychol, Austin, TX 78712 USA
[7] Univ Texas Austin, Mental Hlth Res Inst, Austin, TX 78712 USA
[8] Univ Calif San Diego, Dept Psychiat, La Jolla, CA 92093 USA
[9] Univ Calif San Diego, Dept Family & Prevent Med, La Jolla, CA 92093 USA
[10] Harvard Univ, Dept Psychiat, Cambridge, MA 02138 USA
[11] Univ Calif Los Angeles, Dept Psychol, Los Angeles, CA 90024 USA