1. Department of Pathology, Division of Neuropathology, University of Washington School of Medicine, Seattle, Washington, USA
2. Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
3. Brain Tumor Center and Department of Neurology, University Hospital and University of Zurich, Zurich, Switzerland
4. Department of Biomedical Informatics and Department of Systems Biology, Columbia University, New York, New York, USA