RT Article T1 Unsafe to play?: Neighborhood disorder and lack of safety predict reduced physical activity among urban children and adolescents JF American journal of health promotion VO 18 SP 38 OP 46 A1 Molnar, Beth E. A1 Buka, Stephen L. A1 Bull, F.C. A1 Gortmaker, S.L. A2 Buka, Stephen L. A2 Bull, F.C. A2 Gortmaker, S.L. LA English YR 2004 UL https://krimdok.uni-tuebingen.de/Record/1912736322 DO 10.4278/0890-1171-18.5.378