1. Yerkes National Primate Research Center, Department of Neurology Emory University School of Medicine Atlanta Georgia USA
2. Van Andel Institute, Center for Neurodegenerative Science Grand Rapids Michigan USA
3. Movement Disorders Unit, Department of Neurology Westmead Hospital and Sydney Medical School, University of Sydney Sydney NSW Australia
4. Department of Neurology New York University Grossman School of Medicine New York New York USA
5. Department of Medical Sciences Newcastle University Medical School Newcastle United Kingdom
6. Department of Neurology Santa Maria University Hospital Terni Italy
7. Department of Neurology Neurological Institute, Taipei Veterans General Hospital Taipei Taiwan
8. Department of Neurology Columbia University Irving Medical Center New York New York USA
9. Paracelsus‐Elena Klinik, Kassel, Department of Neurosurgery University Medical Center Goettingen Goettingen Germany