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Cougle JR, Feldner MT, Keough ME, Hawkins KA, Fitch KE. Comorbid panic attacks among individuals with posttraumatic stress disorder: associations with traumatic event exposure history, symptoms, and impairment. J Anxiety Disord. 2010 Mar;24(2):183–8. doi: 10.1016/j.janxdis.2009.10.006. PMID: 19914036. |