title: On call. When I visited a friend in the hospital recently, I was annoyed that I was not allowed to use my cell phone.  Are cell phones really dangerous?
authors.forename: Harvey B
authors.initials: HB
authors.lastname: Simon
mesh_terms: D040421:Cell Phone; D004574:Electromagnetic Fields / Q000009:adverse effects*; D004869:Equipment Safety; D006761:Hospitals; D006801:Humans; D016134:Organizational Policy; D005791:Patient Care; D012449:Safety