During the ESPKU conference 2010 (Denmark), Dr. M. van Rijn presented on the topic:
Challenges of dietary treatment in patients treated with Kuvan.
You can read the article and the presentation here.
Article: van_Rijn_challenges_of_dietary_treatment_in_treatment_with_Kuvan_2.pdf
Presentation: van_Rijn_experiencesBH4_2010UMCG.pdf