TY  - RPRT
TI  - Cross-validation in survival analysis.
AU  - P J Verweij
AU  - H C Van Houwelingen
PY  - 1993
DO  - 10.1002/sim.4780122407
UR  - https://pubmed.ncbi.nlm.nih.gov/8134734/
ID  - 8134734
ER  -