TY  - RPRT
TI  - Defining operative mortality: it should be easy, but is it?
AU  - William Williams
PY  - 2006
DO  - 10.1016/j.athoracsur.2006.02.025
UR  - https://pubmed.ncbi.nlm.nih.gov/16631634/
ID  - 16631634
ER  -