Changes play havoc with marketing plans.
D000556:Ambulatory Surgical Procedures; D003625:Data Collection; D003695:Delivery of Health Care / Q000639:trends*; D004865:Equipment and Supplies, Hospital / Q000600:supply & distribution*; D007221:Industry; D011682:Purchasing, Hospital / Q000639:trends; D013223:Statistics as Topic; D014481:United States