title: Etiology of posttraumatic stress disorder in Vietnam veterans: analysis of premilitary, military, and combat exposure influences.
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D012044:Regression Analysis; D012917:Social Adjustment; D013313:Stress Disorders, Post-Traumatic / Q000209:etiology* / Q000523:psychology; D014481:United States; D014728:Veterans / Q000523:psychology*; D014744:Vietnam