Gavin Andrews is a psychiatrist who is Professor of Psychiatry in the School of Psychiatry at the University of New South Wales, and Director of the Clinical Research Unit for Anxiety and Depression at St. Vincent's Hospital, Sydney, a joint university and hospital facility. Mark Creamer is Director of the Australian Centre for Posttraumatic Mental Health and a Professor in the Department of Psychiatry at the University of Melbourne. He is a clinical psychologist with many years of experience in the field of traumatic stress from both research and clinical perspectives. Rocco Crino is a clinical psychologist at St. Vincent's Hospital. He is Director of the Anxiety Disorders Clinic and Manager of Psychology at St Vincent's Hospital, Sydney. Caroline Hunt is a clinical psychologist and Senior Lecturer in the School of Psychology, University of Sydney. She is a clinician with the Clinical Research Unit for Anxiety and Depression, Sydney. Lisa Lampe is a psychiatrist and Lecturer, School of Psychiatry, University of New South Wales. She is a clinician with the Clinical Research Unit for Anxiety and Depression, Sydney. Andrew Page was a clinical psychologist at St. Vincent's Hospital and a clinician with the Clinical Research Unit for Anxiety and Depression. He is currently Senior Lecturer, Department of Psychology, University of Western Australia, Perth.