Hospitals report growing use of emergency phones for patients, staff.
D015142:Baltimore / Q000453:epidemiology; D003415:Crime / Q000517:prevention & control* / Q000706:statistics & numerical data; D006747:Hospital Communication Systems / Q000706:statistics & numerical data*; D006785:Hospitals, University; D006801:Humans; D010299:Parking Facilities; D012637:Security Measures; D013689:Telephone / Q000706:statistics & numerical data* / Q000639:trends