btw, David survived GBM 20 years,

died about 6 months ago at age 50. His obitury is here

http://www.guardian.co.uk/science/2011/sep/08/david-servan-schreiber-obituary

most common form of brain cancer - glioblastoma multiforme (GBM)

http://en.wikipedia.org/wiki/Glioblastoma_multiforme

Thank you and RIP, David SS