- Correspondence to Dr Fanny Mochel, Institut du Cerveau et de la Moelle épinière, Aile 4A, Groupe Hospitalier Pitié-Salpétrière, Paris 75013, France;
- Received 2 July 2015
- Revised 29 September 2015
- Accepted 14 October 2015
- Published online 14 April 2016.
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- Data supplement 1 - Online supplement
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