- Correspondence to Dr Almut Sickert, Neurologisches Rehabilitationszentrum Magdeburg, Gustav-Ricker-Straße 4, Magdeburg 39120, Germany;
- Received 4 October 2012
- Revised 28 May 2013
- Accepted 7 June 2013
- Published in print 1 January 2014.
- Published online 10 December 2013.
- Published first 4 July 2013.
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