[1] Univ Amsterdam, Acad Med Ctr, Dept Haematol, NL-1105 AZ Amsterdam, Netherlands
[2] Univ Amsterdam, Acad Med Ctr, Dept Internal Med, NL-1105 AZ Amsterdam, Netherlands
[3] Univ Med Ctr Utrecht, Dept Hematol, Utrecht, Netherlands
[4] Sanquin Res, Dept Immunopathol, Amsterdam, Netherlands