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Ponzone, A., Mussa, A. & Porta, F. In response to van Spronsen et al (2009) Phenylalanine tolerance can already reliably be assessed at the age of 2 years in patients with PKU (J Inherit Metab Dis 32: 27–31). J Inherit Metab Dis 32, 584–586 (2009). https://doi.org/10.1007/s10545-009-9959-8
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DOI: https://doi.org/10.1007/s10545-009-9959-8