TY  - RPRT
TI  - The alpha and beta errors in randomized trials.
AU  - R J Lilford
AU  - N Johnson
PY  - 1990
DO  - 10.1056/nejm199003153221119
UR  - https://pubmed.ncbi.nlm.nih.gov/2308613/
ID  - 2308613
ER  -