TY  - RPRT
TI  - Complications, comorbidities, and mortality: improving classification and prediction.
AU  - L L Roos
AU  - L Stranc
AU  - R C James
AU  - J Li
PY  - 1997
UR  - https://pubmed.ncbi.nlm.nih.gov/9180617/
ID  - 9180617
ER  -