[1] Univ Utrecht, Med Ctr, Dept Neurol, Utrecht, Netherlands
[2] Univ Utrecht, Med Ctr, Lab Med Oncol, Utrecht, Netherlands
[3] Univ Utrecht, Med Ctr, Dept Med Oncol, Utrecht, Netherlands
[4] Univ Utrecht, Med Ctr, Dept Clin Epidemiol, Julius Ctr Hlth Sci & Primary Care, Utrecht, Netherlands
[5] Med Ctr Haaglanden, Dept Neurol, The Hague, Netherlands
[6] Univ Utrecht, Ctr Med, Wilhelminas Childrens Hosp, Utrecht, Netherlands
[7] Univ Utrecht, Ctr Med, Dept Pediat, Utrecht, Netherlands
[8] IACOPO Inst Translat Med, Utrecht, Netherlands
[9] Antoni Van Leeuwenhoek Hosp, Dept Clin Chem, Amsterdam, Netherlands
[10] Antoni Van Leeuwenhoek Hosp, Dept Neurol, Amsterdam, Netherlands
[11] Univ Nijmegen, Ctr Med, Dept Neurol, Nijmegen, Netherlands