Fig. 3.

Description by different European geographical regions of how Phe–free infant formula is given when a standard formula is used to provide the phenylalanine source.

Abbreviations: A: give a measured amount of Phe-free infant formula first followed by a measured amount of standard infant formula; B: give a measured amount of standard infant formula followed by Phe-free infant formula to satiety; C: mix Phe-free infant formula with standard infant formula; D: alternate feeds of standard infant formula and Phe-free Infant formula.