RT Article T1 First-Episode Studies in Schizophrenia - Criteria and Characterization JF Schizophrenia bulletin VO 18 IS 3 SP 491 OP 514 A1 Keshavan, M. S. A2 Schooler, N. R. LA English YR 1992 UL https://krimdok.uni-tuebingen.de/Record/1640145273 K1 Schizophrenie