Teaching hospital status and operative mortality in the United States.
Livingston
Edward H
EH
D006784:Hospitals, Teaching / Q000706:statistics & numerical data*; D006801:Humans; D012307:Risk Factors; D013514:Surgical Procedures, Operative / Q000401:mortality* / Q000706:statistics & numerical data; D015996:Survival Rate / Q000639:trends; D014481:United States / Q000453:epidemiology