[1] Temple Univ, Fox Chase Canc Ctr, Philadelphia, PA USA
[2] Natl Canc Ctr Hosp East, Shinjuku Ku, Kashiwa, Chiba, Japan
[3] AstraZeneca, Cambridge, England
[4] NCI, Dev Therapeut Branch, Ctr Canc Res, Bethesda, MD USA
[5] NIH, Bethesda, MD USA
[6] NCI, Bethesda, MD USA