TY  - RPRT
TI  - To define sufficient subjects.
AU  - R G Nairn
AU  - T Morris
PY  - 1980
DO  - 10.1111/j.1445-2197.1980.tb04496.x
UR  - https://pubmed.ncbi.nlm.nih.gov/6928764/
ID  - 6928764
ER  -