[1] Univ Iowa Hosp & Clin, Div Hematol Oncol & Blood & Marrow Transplantat, Iowa City, IA 52242 USA
[2] Mayo Clin, Dept Hlth Sci Res, Rochester, MN USA
[3] Mayo Clin, Div Hematol, Rochester, MN USA
[4] Mayo Clin, Dept Lab Med & Pathol, Rochester, MN USA
[5] Univ Iowa Hosp & Clin, Dept Lab Med & Pathol, Iowa City, IA 52242 USA