Schmidt, H Continuation vs discontinuation of low-phenylalanine diet in PKU adolescents. [electronic resource] - European journal of pediatrics 1987 - A17-9 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0340-6199 Standard No.: 10.1007/BF00442050 doi Subjects--Topical Terms: AdolescentFollow-Up StudiesHumansIntelligenceIntelligence TestsPhenylalanine--administration & dosagePhenylketonurias--diet therapyPsychology, AdolescentRetrospective StudiesTime Factors