TY  - RPRT
TI  - Analysing the association between two variables.
AU  - J S Bulman
AU  - J F Osborn
PY  - 1989
DO  - 10.1038/sj.bdj.4806811
UR  - https://pubmed.ncbi.nlm.nih.gov/2719890/
ID  - 2719890
ER  -