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An unusual “empty delta sign”
  1. Correspondence to:
 Dr L Deus-Silva
 Departamento de Neurologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas, Caixa Postal 6111, Cidade Universitána Zeferino Vaz, 13083-970 Campinas, São Paulo, Brazil
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Deus-Silva L, Voetsch B, Nucci A, et al
An unusual “empty delta sign”

Publication history

  • First published August 16, 2004.
Online issue publication 
August 16, 2004

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