1 School of Medicine (HSV), University of California, Davis, Sacramento, California; Department of Neurological Surgery (KS), University of California, Davis, Sacramento, California; Department of Pathology (BR, AP), University of California San Francisco, California; Department of Radiation Oncology (RF), University of California, Davis, Sacramento, California; Department of Medicine (JT), Division of Hematology/Oncology, University of California, Davis, Sacramento, California; and Department of Ophthalmology and Vision Science (YAL), University of California, Davis, Sacramento, California.