Accuracy of needle placement.
D002102:Cadaver; D004567:Electrodes, Implanted / Q000592:standards*; D004576:Electromyography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D018482:Muscle, Skeletal / Q000033:anatomy & histology / Q000502:physiology*; D009339:Needles