Clinical epidemiology. 3. The clinical design of statistics in therapy.

@article{Feinstein1968ClinicalE3,
  title={Clinical epidemiology. 3. The clinical design of statistics in therapy.},
  author={Alvan R. Feinstein},
  journal={Annals of internal medicine},
  year={1968},
  volume={69 6},
  pages={1287-312}
}