Healthcare & eldercare.
D003363:Cost Control; D003695:Delivery of Health Care / Q000266:history / Q000639:trends*; D005522:Food Services / Q000191:economics / Q000266:history / Q000639:trends*; D058016:Health Facility Administration; D006299:Health Services for the Aged / Q000266:history / Q000639:trends*; D049672:History, 19th Century; D049673:History, 20th Century; D009936:Organizational Innovation; D014481:United States