Source: https://www.cambridge.org/core/books/new-perspectives-on-adolescent-risk-behavior/multiple-risk-factors-for-multiproblem-boys-cooccurrence-of-delinquency-substance-use-attention-deficit-conduct-problems-physical-aggression-covert-behavior-depressed-mood-and-shywithdrawn-behavior/FB47470404EF6D3D5769D848DA47FED6