TY  - RPRT
TI  - Survival estimates and sample size: what can we conclude?
AU  - R Shouman
AU  - M Witten
PY  - 1995
DO  - 10.1093/gerona/50a.3.b177
UR  - https://pubmed.ncbi.nlm.nih.gov/7743397/
ID  - 7743397
ER  -