TY  - RPRT
TI  - On estimating efficacy from clinical trials.
AU  - A Sommer
AU  - S L Zeger
PY  - 1991
DO  - 10.1002/sim.4780100110
UR  - https://pubmed.ncbi.nlm.nih.gov/2006355/
ID  - 2006355
ER  -