[1] Walter Reed Army Med Ctr, Washington, DC 20307 USA
[2] NSABP, Pittsburgh, PA USA
[3] Norton Hlth Care, Louisville, KY USA
[4] Berks Hematol & Oncol Associates, Reading, PA USA
[5] Allegheny Gen Hosp, Pittsburgh, PA 15212 USA
[6] NCI, Bethesda, MD 20892 USA