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Why are upper motor neuron signs difficult to elicit in amyotrophic lateral sclerosis?
  1. Correspondence to Professor Michael Swash, Royal London Hospital, Barts and the London School of Medicine, Queen Mary University of London, London EC2Y 8BL, UK; mswash{at}btinternet.com
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Swash M
Why are upper motor neuron signs difficult to elicit in amyotrophic lateral sclerosis?

Publication history

  • Received January 17, 2012
  • Revised March 13, 2012
  • Accepted March 14, 2012
  • First published April 11, 2012.
Online issue publication 
May 08, 2012

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