RT Article T1 Changing Patterns of Adolescent Sexual Behavior - Consequences for Health and Development JF Journal of adolescent health VO 13 IS 5 SP 345 OP 350 A1 Friedman, H. L. LA English YR 1992 UL https://krimdok.uni-tuebingen.de/Record/1640141545 K1 Jugendliche K1 Sexualverhalten