RT Article T1 Development of self-perceived risk behaviour and psychosomatic symptoms in adolescents: a longitudinal approach JF Journal of adolescence VO 10 IS 3 SP 291 OP 308 A1 Chouquet, M. A1 Menke, H. LA English YR 1987 UL https://krimdok.uni-tuebingen.de/Record/1642284823 K1 Risikoverhalten K1 Heranwachsende