Helmar C Lehmann, MD a, Ulrich R Hengge, MD b, Lutz Alswede, MD c, Andreas Saleh, MD d, Gloria von Geldern, MD a, Hans Peter Hartung, MD a, Thomas Ruzicka, MD b, Bernhard Hemmer, DrMD a, ⁎ 
a Department of Neurology, and Institute of Diagnostic Radiology Heinrich-Heine-University, Düesseldorf, Germany
b Department of Dermatology, and Institute of Diagnostic Radiology Heinrich-Heine-University, Düesseldorf, Germany
c Department of Ophthalmology, and Institute of Diagnostic Radiology Heinrich-Heine-University, Düesseldorf, Germany
d Institute of Diagnostic Radiology Heinrich-Heine-University, Düesseldorf, Germany