TY  - RPRT
TI  - Estimating sample sizes for binary, ordered categorical, and continuous outcomes in two group comparisons.
AU  - M J Campbell
AU  - S A Julious
AU  - D G Altman
PY  - 1995
DO  - 10.1136/bmj.311.7013.1145
UR  - https://pubmed.ncbi.nlm.nih.gov/7580713/
ID  - 7580713
ER  -