TY  - GEN
AU  - Bilal, Usama
AU  - Franco, Manuel
AU  - Gullen, Pedro
PY  - 2014
DO  - 10.1016/j.gaceta.2013.12.011
UR  - http://hdl.handle.net/20.500.12105/12064
LA  - eng
PB  - Elsevier
KW  - Environment
KW  - Housing
KW  - Leisure Activities
KW  - Motor Activity
KW  - Residence Characteristics
KW  - Transportation
KW  - Female
KW  - Humans
KW  - Male
TI  - Physical activity environment measurement and same source bias
T2  - Medición del entorno para realizar actividad física y sesgo de la misma fuente
TY  - letter to the editor
ER  -