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