1. 1Clinic III—Hematology, Oncology, and Palliative Care, Rostock University Medical Center, Rostock, Germany
2. 2University Clinic and Outpatient Clinic for Internal Medicine IV, University Hospital Halle (Saale), Halle (Saale), Germany
3. 3Krukenberg Cancer Center Halle, University Hospital Halle (Saale), Halle (Saale), Germany
4. 4Central Laboratory, University Hospital Halle (Saale), Halle (Saale), Germany
5. 5Division of Neuroimmunology, Department of Neurology, Rostock University Medical Center, Rostock, Germany