K Ray Chaudhuri is a Consultant Neurologist and Professor in Neurology and Movement Disorders at King's College Hospital NHS Foundation Trust, University Hospital Lewisham, King's College London and the Institute of Psychiatry, London, UK.

Pablo Martinez-Martin, MD, PhD, is a neurologist and official researcher of the Spanish Public Boards of Research.

Per Odin completed his medical education and received his PhD from the University of Uppsala, Sweden.

Angelo Antonini, MD, PhD, is Professor of Neurology and Director of the Parkinson Department at the Institute of Neurology IRCCS San Camillo in Venice.