TY  - RPRT
TI  - Comparing clinical information with claims data: some similarities and differences.
AU  - L L Roos
AU  - S M Sharp
AU  - M M Cohen
PY  - 1991
DO  - 10.1016/0895-4356(91)90050-j
UR  - https://pubmed.ncbi.nlm.nih.gov/1890430/
ID  - 1890430
ER  -