title: Posttraumatic stress disorder symptomatology in Vietnam veterans before and after September 11.
authors.forename: Barbara L
authors.initials: BL
authors.lastname: Niles
authors.forename: Erika J
authors.initials: EJ
authors.lastname: Wolf
authors.forename: Catherine J
authors.initials: CJ
authors.lastname: Kutter
mesh_terms: D000368:Aged; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D013313:Stress Disorders, Post-Traumatic / Q000453:epidemiology* / Q000523:psychology*; D023481:Terrorism / Q000523:psychology* / Q000706:statistics & numerical data; D014728:Veterans / Q000523:psychology* / Q000706:statistics & numerical data; D014744:Vietnam