Hospital volume and quality.
Mariotto
Aldo
A
D016507:Cardiology Service, Hospital / Q000592:standards* / Q000706:statistics & numerical data; D001026:Coronary Artery Bypass / Q000401:mortality* / Q000706:statistics & numerical data; D017052:Hospital Mortality; D006801:Humans; D017063:Outcome Assessment, Health Care; D019984:Quality Indicators, Health Care; D012306:Risk; D013503:Surgery Department, Hospital / Q000592:standards* / Q000706:statistics & numerical data; D014481:United States / Q000453:epidemiology