title: Introduction to the ECR special issue on rare diseases.
authors.affiliation: Karolinska Institutet, Department of Molecular Medicine and Surgery, S-17176 Stockholm, Sweden; Karolinska University Hospital, Centre for Inherited Metabolic Diseases, S-17176 Stockholm, Sweden.
authors.forename: Anna
authors.initials: A
authors.lastname: Wedell
mesh_terms: D006801:Humans; D035583:Rare Diseases / Q000235:genetics / Q000276:immunology* / Q000503:physiopathology