1. Division of Hematology/Oncology and Department of Radiology, Boston Children’s Hospital, Boston, Massachusetts
2. Advanced Magnetic Resonance Imaging Center, Department of Radiology, University of Massachusetts Medical School, Worcester
3. Unit of Rare Neurodegenerative and Neurometabolic Diseases, Fondazione Instituto di Ricovero e Cura a Carattere Scientifico, Istituto Neurologico “C. Besta,” Milan, Italy
4. Gene Therapy Program, Dana Farber/Boston Children’s Cancer and Blood Disorders Center, Boston, Massachusetts
5. Gene Therapy Program for Rare Diseases, Boston Children’s Hospital, Boston, Massachusetts