The article you requested is

Comments on a Randomized, Double-Blind Comparison of Sertraline and Placebo for Posttraumatic Stress Disorder in a Department of Veterans Affairs Setting

J Clin Psychiatry 2008;69(4):680[letter]

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Sir: Selective serotonin reuptake inhibitor antidepressants are first-line pharmacologic treatments of posttraumatic stress disorder (PTSD).1,2 Robust effects have been seen in previous large studies of sertraline in civilian populations.3,4 The recent (May 2007) study by Friedman and colleagues5 failed to find evidence of efficacy of sertraline in a veteran population, despite a comprehensive analysis of potential moderator variables.​