RT Article T1 The ethics of informed consent in adolescent research JF Crime prevention and intervention SP 237 OP 247 A1 Kinkel, R. John A2 Norma, C. Josef LA English YR 1989 UL https://krimdok.uni-tuebingen.de/Record/1473013607 SN 311011741X K1 Einverständniserklärung K1 Jugendsurvey K1 Forschungsethik