[1] Univ Munster, Med Ctr, Ctr Bone Marrow Transplantat, Infect Dis Res Program, D-48149 Munster, Germany
[2] Univ Munster, Med Ctr, Dept Pediat Hematol Oncol, D-48149 Munster, Germany
[3] NCI, Expt Transplantat & Immunol Branch, NIH, Bethesda, MD 20892 USA
[4] Univ Bonn, Dept Internal Med 1, D-53121 Bonn, Germany
[5] Goethe Univ Frankfurt, Dept Internal Med, Div Infect Dis, D-60590 Frankfurt, Germany
[6] Univ Hosp Berlin, Charite, Dept Internal Med, Div Hematol & Oncol, D-13353 Berlin, Germany
[7] NCI, Pediat Oncol Branch, Immunocompromised Host Sect, NIH, Bethesda, MD 20892 USA