[Letter: Diagnosis of Folling's disease].
D000367:Age Factors; D006801:Humans; D007231:Infant, Newborn; D010649:Phenylalanine / Q000097:blood; D010661:Phenylketonurias / Q000097:blood / Q000652:urine*; D011934:Reagent Strips
D011934:Reagent Strips; D010649:Phenylalanine
Diagnosen of Følling's sygdom.