TY  - JOUR
A1  - Saelens, B.E.
A1  - Sallis, J.F.
A1  - Black, J.B.
A1  - Chen, D.
T1  - Neighborhood-based differences in physical activity: An environment scale evaluation
Y1  - 2003
DO  - 10.2105/AJPH.93.9.1552
JF  - American Journal of Public Health
VL  - 93
IS  - 9
SP  - 1552
EP  - -1558

ER  -