RT Article T1 Epidemiology of PTSD in an national cohort of Vietnam veterans JF Journal of clinical psychology VO 43 IS 1 SP 6 OP 16 A1 Card, Josephina J. LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/163431073X K1 Kriegsveteran K1 Vietnam K1 Posttraumatische Belastungsstörung