TY  - RPRT
TI  - Common problems in using, modifying, and reporting on classic measurement instruments.
AU  - L H Daltroy
PY  - 1997
DO  - 10.1002/art.1790100612
UR  - https://pubmed.ncbi.nlm.nih.gov/9481236/
ID  - 9481236
ER  -