TY  - RPRT
TI  - Ambulatory accelerometry to quantify motor behaviour in patients after failed back surgery: a validation study.
AU  - J B Bussmann
AU  - Y M van de Laar
AU  - M P Neeleman
AU  - H J Stam
PY  - 1998
DO  - 10.1016/s0304-3959(97)00161-9
UR  - https://pubmed.ncbi.nlm.nih.gov/9520229/
ID  - 9520229
ER  -