TY  - RPRT
TI  - Statistics notebook: entry II. A., Controlled experiment.
AU  - P N De Land
AU  - W W Chase
PY  - 1990
DO  - 10.1097/00006324-199012000-00006
UR  - https://pubmed.ncbi.nlm.nih.gov/2082238/
ID  - 2082238
ER  -