1. Department of Radiology, Division of Neuroradiology, University of Pennsylvania, Philadelphia, PA, USA
2. Department of Neurology, Medical University of Silesia, Katowice, Poland
3. Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Medical Center, Baltimore, MD, USA
4. Al-Imam Muhammad Ibn Saud Islamic University, Riyadh, Saudi Arabia
5. Department of Nuclear Medicine, Medical University of Gdansk, Gdansk, Poland
6. Department of Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
7. Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
8. Department of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
9. Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, PA, USA