[1] Univ Melbourne, ACPMH, Melbourne, Vic 3002, Australia
[2] Cardiff Univ, Dept Psychol Med, Cardiff, S Glam, Wales
[3] Allegheny Gen Hosp, Dept Psychiat, Pittsburgh, PA 15212 USA
[4] Drexel Univ, Coll Med, Philadelphia, PA USA
[5] Univ Penn, Dept Psychiat, Ctr Treatment & Study Anxiety, Philadelphia, PA 19104 USA
[6] Dartmouth Med Sch, Dept Psychiat, Hanover, NH USA
[7] Dartmouth Med Sch, Dept Pharmacol, Hanover, NH USA
[8] Boston Univ, Sch Med, Dept Psychiat, Boston, MA 02215 USA
[9] US Dept Vet Affairs, Mid Atlantic Mental Illness Res Educ & Clin Ctr, Washington, DC USA
[10] Uniformed Serv Univ Hlth Sci, Ctr Study Traumat Stress, Bethesda, MD USA