Erratum to: J Inherit Metab Dis

DOI 10.1007/s10545-010-9120-8

In the original published article, heading “Discussion”, subheading “Available treatment”, section 5, there is a mistake in the sentence “With oral methionine supplementation (40–50 mg/kg per day) ….”. It should read:

“With oral methionine supplementation (40–50 mg per day) ….”

The daily dose in mg per kg is the mistake.