title: Prefabricated headwall systems and service columns. ECRI.
mesh_terms: D004560:Electricity; D004867:Equipment Design; D004865:Equipment and Supplies, Hospital / Q000592:standards*; D005069:Evaluation Studies as Topic; D005740:Gases / Q000600:supply & distribution; D006747:Hospital Communication Systems; D008029:Lighting; D010362:Patients' Rooms
chemical_list: D005740:Gases