MacDonald, A 'Ready to drink' protein substitute is easier is for people with phenylketonuria. [electronic resource] - Journal of inherited metabolic disease Aug 2006 - 526-31 p. digital Publication Type: Journal Article; Randomized Controlled Trial ISSN: 1573-2665 Standard No.: 10.1007/s10545-006-0234-y doi Subjects--Topical Terms: AdolescentAdultBeveragesChildCross-Over StudiesDietDietary SupplementsFemaleHumansMaleMiddle AgedPhenylalanine--bloodPhenylketonurias--therapyProteins--chemistryTyrosine--blood