1. Department of Neurology, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
2. Neurology, Private Practice Villa Pfahler, St. Ingbert, Germany
3. Neurology, RWTH University Hospital, Aachen, Germany
4. Neurology, University Medicine, Greifswald, Germany
5. Clinic for internal medicine, diabetology and angiology, Agaplesion Diakonie Clinics, Kassel, Germany
6. Clinic for Cardiology and Angiology, University Hospital Giessen-Marburg, Marburg, Germany
7. Neurology, Asklepios Neurologic Clinic Bad Salzhausen, Nidda, Germany