1 Department of Neurology, St. Josef-Hospital, Ruhr University of Bochum, Gudrunstr.56, Bochum, Germany; Second Department of Neurology, "Attikon" University Hospital, School of Medicine, National & Kapodistrian University of Athens, Athens, Greece.
2 Department of Neurology, St. Josef-Hospital, Ruhr University of Bochum, Gudrunstr.56, Bochum, Germany.
3 Second Department of Neurology, "Attikon" University Hospital, School of Medicine, National & Kapodistrian University of Athens, Athens, Greece; Department of Neurology, University of Tennessee Health Science Center, Memphis, TN, USA.
4 Department of Neurology, St. Josef-Hospital, Ruhr University of Bochum, Gudrunstr.56, Bochum, Germany. Electronic address: [email protected].