RT Article T1 The placebo in psychosocial outcome evaluations JF Evaluation & the health professions VO 9 IS 4 SP 421 OP 438 A1 Dush, David M. LA English YR 1986 UL https://krimdok.uni-tuebingen.de/Record/1465155198 K1 Placebo K1 Psychosoziale Evaluation