MD, and PhD student at the department of pediatrics, metabolic diseases of the University Medical Center Groningen, the Netherlands. Phd Project focusses on improvement of neonatal screening for Tyrosinemia type 1, and improvement of (home) blood monitoring for Tyrosinemia type 1 and Phenylketonuria. Projects are under supervision of Francjan van Spronsen, metabolic pediatrician, and Rebecca Heiner-Fokkema, Clinical chemist metabolic diseases.