title: Exacerbations of Post-traumatic Stress Disorder symptomatology in Vietnam veterans.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D013313:Stress Disorders, Post-Traumatic / Q000523:psychology*; D014481:United States; D014728:Veterans / Q000523:psychology*; D014744:Vietnam; D014857:Warfare