[1] Erasmus Univ, Sophia Childrens Hosp, Med Ctr, Dept Pediat Hematol, Rotterdam, Netherlands
[2] Univ Amsterdam, Acad Med Ctr, Hosp Pharm Clin Pharmacol, NL-1105 AZ Amsterdam, Netherlands
[3] Univ Med Ctr Groningen, Dept Hematol, NL-9713 AV Groningen, Netherlands
[4] Univ Amsterdam, Acad Med Ctr, Dept Pediat Hematol, NL-1105 AZ Amsterdam, Netherlands
[5] Radboud Univ Nijmegen, Med Ctr, Dept Hematol, NL-6525 ED Nijmegen, Netherlands
[6] Leiden Univ, Med Ctr, Dept Thrombosis & Hemostasis, Leiden, Netherlands
[7] NVHP, Netherlands Hemophilia Patient Soc, Nijkerk, Netherlands
[8] Erasmus Univ, Med Ctr, Dept Hematol, Rotterdam, Netherlands