1. Departments of Pediatrics (E.E.J.W.S., H.L.C.-v.d.G.), 6500 HB Nijmegen, The Netherlands
2. Laboratory Medicine (E.E.J.W.S., A.E.v.H., R.A.W., F.C.G.J.S.,), 6500 HB Nijmegen, The Netherlands
3. Radiation Oncology (P.N.S.), and Internal Medicine (A.R.M.M.H.), Radboud University Medical Center, 6500 HB Nijmegen, The Netherlands