[1] Univ Minnesota, Dept Microbiol & Immunol, Minneapolis, MN USA
[2] Radboud Univ Nijmegen, Lab Hematol, Med Ctr, Nijmegen, Netherlands
[3] Univ Minnesota, Ctr Canc, Acad Hlth Ctr, Minneapolis, MN USA
[4] Univ Minnesota, Dept Therapeut Radiol Radiat Oncol, Minneapolis, MN USA
[5] Radboud Univ Nijmegen, Dept Lab Med, Med Ctr, Nijmegen, Netherlands
[6] Univ Minnesota, Dept Med, Hematol Oncol & Transplantat, Box 736 UMHC, Minneapolis, MN 55455 USA