1. Department of Pediatric Hematology and Oncology Justus‐Liebig University Giessen Germany
2. Medical Faculty, Martin‐Luther‐University Halle (Saale) Germany
3. Department of Ear, Nose and Throat Medicine, Hospital Fulda Fulda Germany
4. Department of Pathology, Justus‐Liebig University Giessen Germany
5. Department of Otorhinolaryngology, Head and Neck Surgery, Justus‐Liebig University Giessen Germany
6. Department of Nuclear Medicine, Justus‐Liebig University Giessen Germany
7. Department of Radiology, Justus‐Liebig University Giessen Germany
8. Department of Nuclear Medicine, University of Leipzig Leipzig Germany
9. Department of Neuroradiology, Hospital Fulda Fulda Germany
10. Department of Radiology, Martin‐Luther‐University Halle (Saale) Germany