[1] NIVEL, Netherlands Inst Hlth Serv Res, NL-3500 BN Utrecht, Netherlands
[2] Univ Med Ctr Utrecht, Patient Safety Ctr, Utrecht, Netherlands
[3] Radboud Univ Nijmegen Med Ctr, Dept Pediat Hematooncol, Nijmegen, Netherlands
[4] Univ Groningen, Dept Pediat Oncol, Beatrix Childrens Hosp, Univ Med Ctr Groningen, NL-9700 AB Groningen, Netherlands
[5] Erasmus Univ, Med Ctr, Sophia Childrens Hosp, Dept Pediat Oncol Hematol, Rotterdam, Netherlands
[6] Univ Utrecht, Fac Social Sci, Dept Clin & Hlth Psychol, NL-3508 TC Utrecht, Netherlands