TY  - RPRT
TI  - Survival probabilities (the Kaplan-Meier method).
AU  - J M Bland
AU  - D G Altman
PY  - 1998
DO  - 10.1136/bmj.317.7172.1572
UR  - https://pubmed.ncbi.nlm.nih.gov/9836663/
ID  - 9836663
ER  -