The hospital medical staff of 1997.
D004992:Ethics, Medical; D005544:Forecasting; D006279:Health Maintenance Organizations; D006754:Hospital Restructuring; D006801:Humans; D007325:Institutional Practice / Q000639:trends; D008505:Medical Staff, Hospital / Q000639:trends*; D011050:Policy Making; D011243:Preferred Provider Organizations; D011785:Quality Assurance, Health Care; D012017:Referral and Consultation; D014481:United States