1. Department of Pediatrics, CF Center Copenhagen, RigshospitaletCopenhagen University HospitalCopenhagen Denmark
2. Department for Congenital Disorders, Center for Neonatal ScreeningStatens Serum InstitutCopenhagen Denmark
3. Departments of Pediatrics and Clinical Genetics, Center for Inherited Metabolic Diseases, RigshospitaletCopenhagen University HospitalCopenhagen Denmark
4. Department of Pediatrics, CF Center AarhusAarhus University HospitalAarhus Denmark
5. Department of Clinical Genetics, Molecular Genetics Laboratory, RigshospitaletCopenhagen University HospitalCopenhagen Denmark