TY  - RPRT
TI  - Can futility be defined numerically?
AU  - J Rapoport
AU  - D Teres
AU  - S Lemeshow
PY  - 1998
DO  - 10.1097/00003246-199811000-00009
UR  - https://pubmed.ncbi.nlm.nih.gov/9824062/
ID  - 9824062
ER  -