TY  - RPRT
TI  - Defining physical inactivity.
AU  - Fiona Bull
AU  - CRA Physical Activity Work Group
PY  - 2003
DO  - 10.1016/s0140-6736(03)12290-8
UR  - https://pubmed.ncbi.nlm.nih.gov/12547568/
ID  - 12547568
ER  -