TY  - RPRT
TI  - Multivariable prognostic models: issues in developing models, evaluating assumptions and adequacy, and measuring and reducing errors.
AU  - F E Harrell
AU  - K L Lee
AU  - D B Mark
PY  - 1996
DO  - 10.1002/(sici)1097-0258(19960229)15:4<361::aid-sim168>3.0.co;2-4
UR  - https://pubmed.ncbi.nlm.nih.gov/8668867/
ID  - 8668867
ER  -