[1] Univ Calif San Francisco, Helen Diller Family Canc Res Ctr, Dept Neurol Surg, San Francisco, CA 94143 USA
[2] Univ Calif San Francisco, Helen Diller Family Canc Res Ctr, Dept Anat, San Francisco, CA 94143 USA
[3] Univ Calif San Francisco, Brain Tumor Res Ctr, San Francisco, CA 94143 USA
[4] Univ Calif San Francisco, UCSF Comprehens Canc Ctr, Helen Diller Family Canc Res Ctr, San Francisco, CA 94143 USA
[5] McGill Univ, Dept Biochem, Montreal, PQ H3G 1Y6, Canada
[6] McGill Univ, Goodman Canc Res Ctr, Montreal, PQ H3G 1Y6, Canada
[7] Univ Calif San Francisco, Dept Pathol, San Diego, CA 92093 USA
[8] Univ Calif San Francisco, Moores UCSD Canc Ctr, San Diego, CA 92093 USA