Ambulatory care--old attitudes, old habits must change.
D000553:Ambulatory Care / Q000191:economics / Q000458:organization & administration*; D054598:Blue Cross Blue Shield Insurance Plans; D058016:Health Facility Administration; D006279:Health Maintenance Organizations / Q000458:organization & administration; D006297:Health Services Accessibility; D010823:Physician Assistants / Q000706:statistics & numerical data; D014481:United States; D014922:Wisconsin