TY  - RPRT
TI  - A practical approach to content validation.
AU  - E M Slocumb
AU  - F L Cole
PY  - 1991
DO  - 10.1016/s0897-1897(05)80097-7
UR  - https://pubmed.ncbi.nlm.nih.gov/1772253/
ID  - 1772253
ER  -