[1] St Jude Childrens Res Hosp, Dept Psychol, 262 Danny Thomas Pl, Memphis, TN 38105 USA
[2] Acad Med Ctr, Emma Childrens Hosp, Psychosocial Dept, Amsterdam, Netherlands
[3] Princess Maxima Ctr Pediat Oncol, Utrecht, Netherlands
[4] Radboud Univ Nijmegen, Med Ctr, Amalia Childrens Hosp, Dept Med Psychol, Nijmegen, Netherlands