RT Article T1 Cannabis and schizophrenia: results of a follow-up study JF European archives of psychiatry + clinical neuroscience VO 249 IS 1 SP 45 OP 49 A1 Caspari, Dieter LA English YR 1999 UL https://krimdok.uni-tuebingen.de/Record/1639768645 K1 Schizophrenie K1 Cannabismissbrauch