[1] Med Ctr Haaglanden, Dept Radiol, The Hague, Netherlands
[2] Erasmus MC Sophia Childrens Hosp, Dept Pediat Oncol Hematol, Rotterdam, Netherlands
[3] Erasmus MC, Dept Publ Hlth, Rotterdam, Netherlands
[4] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands