[1] Erasmus Univ, Med Ctr, Sophia Childrens Hosp, Dept Pediat Oncol, Rotterdam, Netherlands
[2] Vrije Univ Amsterdam, Med Ctr, Dept Pediat, Amsterdam, Netherlands
[3] Princess Maxima Ctr Pediat Oncol, Dept Pediat Oncol, Utrecht, Netherlands
[4] Beatrix Childrens Hosp, Univ Med Ctr Groningen, Dept Pediat Oncol, Groningen, Netherlands
[5] Radboud Univ Nijmegen, Med Ctr, Dept Pediat Oncol, Nijmegen, Netherlands
[6] Leiden Univ, Med Ctr, Willem Alexander Childrens Hosp, Dept Pediat Stem Cell Transplantat, Leiden, Netherlands
[7] Wilhelmina Childrens Hosp, Univ Med Ctr Utrecht, Dept Pediat Oncol, Utrecht, Netherlands
[8] Erasmus Univ, Med Ctr, Sophia Childrens Hosp, Dept Endocrinol, Rotterdam, Netherlands
[9] Emma Childrens Hosp, Acad Med Ctr, Dept Pediat Oncol, Amsterdam, Netherlands