[1] Erasmus MC, Dept Immunol, Rotterdam, Netherlands
[2] L Warynski Silesian Med Acad, Dept Pediat Hematol & Oncol, Zabrze, Poland
[3] Delft Univ Technol, Fac Elect Engn Math & Comp Sci, Informat & Commun Theory Grp, Delft, Netherlands
[4] Dutch Childhood Oncol Grp, The Hague, Netherlands