- Correspondence to Dr Pablo Mir, Unidad de Trastornos del Movimiento, Servicio de Neurología y Neurofisiología Clínica, Hospital Universitario Virgen del Rocío, Avda. Manuel Siurot sn., Sevilla 41013, Spain;
- Received August 17, 2012
- Revised December 4, 2012
- Accepted December 12, 2012
- First published January 10, 2013.
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