TY  - RPRT
TI  - Statistical methods in research.
AU  - E R Greenberg
AU  - T A Stukel
AU  - J A Baron
AU  - D H Freeman
PY  - 1993
DO  - 10.1016/0140-6736(93)92911-c
UR  - https://pubmed.ncbi.nlm.nih.gov/8105288/
ID  - 8105288
ER  -