TY  - RPRT
TI  - Demographic variation in SF-12 scores: true differences or differential item functioning?
AU  - John A Fleishman
AU  - William F Lawrence
PY  - 2003
DO  - 10.1097/01.mlr.0000076052.42628.cf
UR  - https://pubmed.ncbi.nlm.nih.gov/12865729/
ID  - 12865729
ER  -