TY  - RPRT
TI  - Using administrative data from Manitoba, Canada to study treatment outcomes: developing control groups and adjusting for case severity.
AU  - N P Roos
PY  - 1989
DO  - 10.1016/0277-9536(89)90137-8
UR  - https://pubmed.ncbi.nlm.nih.gov/2928819/
ID  - 2928819
ER  -