The winds of change.
D000293:Adolescent; D000768:Anesthesia, General / Q000401:mortality; D002648:Child; D002675:Child, Preschool; D017048:Health Care Costs; D017052:Hospital Mortality; D006801:Humans; D007223:Infant; D008329:Managed Care Programs / Q000191:economics; D011787:Quality of Health Care; D012307:Risk Factors; D006113:United Kingdom / Q000453:epidemiology; D014481:United States / Q000453:epidemiology