- Correspondence to Dr Eugen Trinka, Department of Neurology, Paracelsus Medical University, Christian Doppler Klinik, Ignaz Harrer Strasse 79, A-5020 Salzburg, Austria;
- Received April 22, 2011
- Revised May 15, 2012
- Accepted July 13, 2012
- First published August 29, 2012.
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