- Correspondence to Dr Simona Luzzi, Neurologic Clinic, Department of Experimental and Clinical Medicine, Polytechnic University of Marche, Via Conca, 1, 60020 Torrette di Ancona, Italy;
- Received October 25, 2013
- Revised January 9, 2014
- Accepted January 13, 2014
- First published January 31, 2014.
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