1. Department of Clinical Chemistry; Máxima Medical Centre Veldhoven; Veldhoven; The Netherlands
2. Department of Clinical Chemistry; Catharina Hospital Eindhoven; Eindhoven; The Netherlands
3. Biochemistry Department; Cardiovascular Research Institute Maastricht; Maastricht University; Maastricht; The Netherlands
4. Department of Molecular Biology; Leiden University Medical Center; Leiden; The Netherlands
5. Department of Pediatrics; Máxima Medical Centre Veldhoven; Veldhoven; The Netherlands
6. Department of Pediatrics; Catharina Hospital Eindhoven; Eindhoven; The Netherlands