Correction to: PKU dietary handbook to accompany PKU guidelines

A MacDonald, A M J van Wegberg, K Ahring, S Beblo, A Bélanger-Quintana, A Burlina, J Campistol, T Coşkun, F Feillet, M Giżewska, S C Huijbregts, V Leuzzi, F Maillot, A C Muntau, J C Rocha, C Romani, F Trefz, F J van Spronsen