Corresponding author:
Dr. A. Beishuizen
Princess Máxima Center for Pediatric Oncology
Address: Postbus 85090, 3508 AB Utrecht, The Netherlands
Phone: +31-88-9727272
Fax: +31-88-9725009
Email:
a.beishuizen-2@prinsesmaximacentrum.nl
Word count abstract: 99