TY  - RPRT
TI  - Simplified risk stratification system for open heart surgery.
AU  - Victor Parsonnet
PY  - 2006
DO  - 10.1016/j.athoracsur.2006.05.027
UR  - https://pubmed.ncbi.nlm.nih.gov/17062294/
ID  - 17062294
ER  -