RT Article T1 Nontreatment factors affecting treatment outcome in substance abuse JF American journal of drug and alcohol abuse VO 15 IS 1 SP 13 OP 30 A1 Westermeyer, Joseph 1937- LA English YR 1989 UL https://krimdok.uni-tuebingen.de/Record/1637040261 K1 Suchtmittelmissbrauch K1 Suchtbehandlung