title: [Letter: Early diagnosis of Foelling's disease].
mesh_terms: D000367:Age Factors; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008722:Methods; D010661:Phenylketonurias / Q000097:blood / Q000175:diagnosis*; D013997:Time Factors
vernacular_title: Tidlig diagnostik af Følling's sygdom