1. Posttraumatic stress disorder : diagnosis, history, and longitudinal course / Arieh Y. Shalev -- 2. Epidemiology of traumatic events and posttraumatic stress disorder / Tracie O. Afifi, Gordon J.G. Asmundson, and Jitender Sareen -- 3. Diagnostic dilemmas in assessing posttraumatic stress disorder / Berthold P.R. Gersons and Miranda Olff -- 4. Neuroimaging and posttraumatic stress disorder / Sarah N. Garfinkel and Israel Liberzon -- 5. Brain circuits in posttraumatic stress disorder / Eric Vermetten and Ruth Lanius -- 6. The genetics of posttraumatic stress disorder / Eduard Maron and Jakov Shlik -- 7. Setting apart the affected : a novel animal model for posttraumatic stress disorder and its translational perspective / Joseph Zohar, Michael Matar, and Hagit Cohen -- 8. Psychosocial treatments of posttraumatic stress disorder / Kerry J. Ressler and Barbara O. Rothbaum -- 9. Pharmacotherapy of posttraumatic stress disorder / Lakshmi N. Ravindran and Murray B. Stein -- 10. Early interventions following traumatic events / Jonathan I. Bisson, Arieh Y. Shalev, and Joseph Zohar -- 11. Traumatic stress disorders in children / Soraya Seedat -- 12. Ethnocultural issues / Alexander McFarlane and Devon Hinton -- 13. Posttraumatic stress disorder after disasters / Andrea R Maxwell and Sandro Galea -- 14. Symptom exaggeration in posttraumatic stress disorder / Alzbeta Juven-Wetzler, Rachel Sonnino, Danit Bar-Ziv, and Joseph Zohar -- 15. Future directions / Joseph Zohar, Murray B. Stein, and David Nutt.