[1] Univ Texas, Med Branch, Sealy Ctr Mol Sci, Galveston, TX 77555 USA
[2] Univ Florida, Shands Canc Ctr, Gainesville, FL 32610 USA
[3] Amer Hlth Fdn, Ctr Canc, Div Carcinogenesis & Mol Epidemiol, Valhalla, NY 10595 USA
[4] Acorda Therapeut Inc, Hawthorne, NY 10532 USA