Showing improvement is a must for 1999 survey.
D000068:Accreditation / Q000639:trends*; D003625:Data Collection; D006268:Health Facilities / Q000592:standards; D006801:Humans; D007591:Joint Commission on Accreditation of Healthcare Organizations; D019300:Medical Errors; D009873:Operating Rooms / Q000592:standards; D011785:Quality Assurance, Health Care; D018571:Sentinel Surveillance; D014481:United States