1. Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
2. Pappas Center for Neuro-Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
3. NMR Surgical Laboratory, Department of Surgery, Massachusetts General Hospital and Shriners Burn Institute, Harvard Medical School, Boston, MA 02114, USA.
4. Agios Pharmaceuticals, Cambridge, MA 02139, USA.
5. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
6. Dana-Farber Cancer Institute, Boston, MA 02115, USA.