Noise you can't hear.
Lewis
William R
WR
D017147:Defibrillators, Implantable / Q000009:adverse effects / Q000592:standards*; D004574:Electromagnetic Fields / Q000009:adverse effects*; D004868:Equipment Failure; D004869:Equipment Safety; D006801:Humans; D010138:Pacemaker, Artificial / Q000009:adverse effects / Q000592:standards*; D019047:Phantoms, Imaging / Q000592:standards; D057233:Radio Frequency Identification Device; D018570:Risk Assessment