1 King's College London, Department of Neurosciences, Institute of Psychiatry, Psychology & Neuroscience, London, UK.
2 Parkinson's Foundation Centre of Excellence, King's College Hospital, London, UK.
3 Clinical Neurodegenerative Research Unit, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
4 Movement Disorder Clinic, National Institute of Neurology and Neurosurgery, Mexico City, Mexico.
5 King's College Hospital National Health Service Foundation Trust, London, UK.
6 Department of Neurology, Faculty of Medicine, Transilvania University of Brașov, Brașov, Romania.
7 Department of Neurology, County Emergency Clinic Hospital, Brașov, Romania.
8 Chulalongkorn Centre of Excellence for Parkinson's Disease & Related Disorders, Department of Medicine, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand.
9 The Academy of Science, The Royal Society of Thailand, Bangkok, Thailand.
10 German Center for Neurodegenerative Diseases Rostock/Greifswald, Rostock, Germany.
11 Department of Neurology, Translational Neurodegeneration Section "Albrecht Kossel," University of Rostock, Rostock, Germany.
12 Division of Neurology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden.
13 Parkinson and Movement Disorders Unit, Department of Neuroscience, University of Padua, Padua, Italy.