The concentric versus the monopolar needle electrode: The case for concentric needles


  • W. Trojaborg MD, PhD

    Corresponding author
    1. Neurological Institute, 710 West 168th Street, New York, New York 10032, USA
    • American Association of Electrodiagnostic Medicine, 421 First Avenue S.W., Suite 300 East, Rochester, MN 55902, USA
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