1. Department of Neurology Ulm University Hospital Ulm Germany
2. Department of Pharmaceutical Organic Chemistry Assiut University Assiut Egypt
3. UCL Huntington's disease Centre UCL Queen Square Institute of Neurology and National Hospital for Neurology and Neurosurgery Queen Square London UK
4. Swiss Huntington Centre Neurozentrum, Siloah AG Gumligen Switzerland
5. University Hospital of Old Age Psychiatry and Psychotherapy Bern University Bern Switzerland