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4. Tanielian and Jaycox, Invisible Wounds, 335–57. 5. American Psychiatric Association (APA), “Posttraumatic Stress Disorder,” fact sheet from The Diagnostic and Statistical Manual of Mental Disorders: DSM-5, 5th ed. (Washington, DC: APA, 2013), accessed 28 June 2016, http://www.dsm5.org/Documents/PTSD%20 Fact%20Sheet.pdf. 6. APA, DSM-5, 271–77. 7. Tyler Smith et al., “New Onset and Persistent Symptoms of Post-traumatic Stress Disorder Self Reported after Deployment and Combat Exposures: Prospective Population Based US Military Cohort Study,” The BMJ (formerly the British Medical Journal) website, 2008, accessed 28 June 2016, http://www.bmj.com/content/336/7640/366. 336: 366–371; Tanielian and Jaycox, Invisible Wounds, 200; “One In Five Iraq and Afghanistan Veterans Suffer from PTSD or Major Depression,” RAND Corporation news release, 17 April 2008, accessed 28 June 2016, http://www.rand.org/news/press/2008/04/17.html. 8. Tanielian and Jaycox, Invisible Wounds, 200. 9. Ibid., 170. 10. Ibid., 197. 11. Ibid., 99. 12. Ibid., 170; David Morris, “War Is Hell, and the Hell Rubs Off,” Slate website, 17 April 2014, accessed 28 June 2016, http://www. slate.com/articles/health_and_science/medical_examiner/2014/04/ ptsd_and_violence_by_veterans_increased_murder_rates_related_to_war_experience.html. 13. Tanielian and Jaycox, Invisible Wounds, 185. 14. Michelle Van Etten and Steven Taylor, “Comparative Efficacy of Treatments for Post-traumatic Stress Disorder: A Meta-Analysis,” Clinical Psychology and Psychotherapy 5 (1998): 138–39; Peter E. Natha