Anthony HV Schapira, MD DSC, FRCP, FMedSci, Professor and Head of Department University College of Clinical Neurosciences, Institute of Neurology, University College London, Queen Square, London UK. Professor of Neurology, National Hospital for Neurology and Neurosurgery and Roayl Free Hospital, London, UK.

Andreas Hartmann, MD, Clinical Investigation Center, Pitie-Salpetriere Hopital, Paris, France. Federation of Nervous System Disease, Pitie-Salpetriere Hopital, Paris, France. National Institute of Health and Medical Research, Paris, France. Pierre and MAric Curie University,?Paris, France.

Yves Agid, MD, PhD, Clinical Investigation Center, Pitie-Salpetriere Hopital, Paris, France. Federation of Nervous System Disease, Pitie-Salpetriere Hopital, Paris, France. National Institute of Health and Medical Research, Paris, France. Pierre and MAric Curie University,?Paris, France.

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