1 From the Division of Rheumatology, Medical Department III-Endocrinology, Nephrology and Rheumatology, Department of Internal Medicine, Neurology and Dermatology, University of Leipzig Medical Centre.
2 Department of Pathology, University of Leipzig, Leipzig.
3 Institute for Neuropathology, University of Aachen, Aachen.
4 Department of Neurology, Department of Internal Medicine, Neurology and Dermatology, University of Leipzig Medical Centre, Leipzig, Germany.