- Correspondence to: Dr Matthias Kieslich, Department of Paediatrics, Paediatric Neurology, Johann Wolfgang Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt/Main, Germany;
- Received October 31, 2001
- Accepted March 12, 2002
- Revised March 11, 2002
- First published July 1, 2002.
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