TY  - RPRT
TI  - Comparison of information sources for case-referent data.
AU  - B Persson
AU  - M Karlsson
AU  - O Axelson
PY  - 1994
DO  - 10.5271/sjweh.1384
UR  - https://pubmed.ncbi.nlm.nih.gov/7863301/
ID  - 7863301
ER  -