title: Ethical roles can exist only in an ethical system.
authors: Methodist Hospitals of Dallas, TX.
authors: D H
authors: DH
authors: Hitt
mesh_terms: D003363:Cost Control / Q000592:standards; D004992:Ethics, Medical; D005380:Financing, Government / Q000592:standards; D015276:Health Care Rationing / Q000592:standards*; D012017:Referral and Consultation; D014481:United States