The UL label: what does it really mean?
D001513:Beds / Q000592:standards; D004553:Electric Conductivity; D004556:Electric Injuries / Q000517:prevention & control; D004560:Electricity; D004865:Equipment and Supplies, Hospital / Q000592:standards*; D006801:Humans; D009938:Organizations; D012926:Social Control, Formal; D014481:United States