1. Department of Neurology, Eginition Hospital National and Kapodistrian University of Athens Athens Greece
2. Center of Neurology, Department of Neurodegeneration and Hertie‐Institute for Clinical Brain Research University of Tuebingen Tübingen Germany
3. German Center for Neurodegenerative Diseases University of Tuebingen Tuebingen Germany
4. Neurology Clinic, Henry Dunan Hospital Athens Greece
5. Deree‐The American College of Greece Paraskevi Greece
6. Department of Enzymology and Cellular Function Institute of Child Health Athens Greece
7. Department of Neurology, Attikon Hospital National and Kapodistrian University of Athens Athens Greece
8. Neurology Clinic, Dafni Psychiatric Hospital Athens Greece
9. HYGEIA Hospital Athens Greece