TY  - RPRT
TI  - Reliability of accelerometry-based activity monitors: a generalizability study.
AU  - Gregory J Welk
AU  - Jodee A Schaben
AU  - James R Morrow
PY  - 2004
UR  - https://pubmed.ncbi.nlm.nih.gov/15354049/
ID  - 15354049
ER  -