[1] NCI, Surg Branch, NIH, Bethesda, MD 20892 USA
[2] NIH, Internal Med Consultat Serv, Ctr Clin, Bethesda, MD 20892 USA
[3] NCI, Pathol Lab, NIH, Bethesda, MD 20892 USA
[4] NIAID, Lab Clin Infect Dis, NIH, Bethesda, MD USA
[5] Bon Secours Canc Inst, Richmond, VA USA