TY  - RPRT
TI  - Physical activity: what's afoot?
AU  - M Booth
PY  - 1997
DO  - 10.1111/j.1467-842x.1997.tb01753.x
UR  - https://pubmed.ncbi.nlm.nih.gov/9470256/
ID  - 9470256
ER  -