[1] Univ Alabama Birmingham, Heersink Sch Med, Dept Pathol, Div Neuropathol, Birmingham, AL USA
[2] Univ Alabama Birmingham, ONeal Comprehens Canc Ctr, Birmingham, AL USA
[3] Teesside Univ, Sch Hlth & Life Sci, Middlesbrough, England
[4] Natl Inst Biol, Dept Genet Toxicol & Canc Biol, Ljubljana, Slovenia