| Affiliation: | 1.Clinical and Molecular Genetics Unit, Institute of Child Health, 30 Guilford St., London, WC1N 1EH, UK,;2.Department of Medical Genetics, University Hospital of Troms?, Troms?, Norway,;3.Department of Clinical Biochemistry, Statens Serum Institut, Copenhagen, Denmark,;4.Duncan Guthrie Institute of Medical Genetics, Yorkhill NHS Trust, Yorkhill, Glasgow, G3 8SJ, UK,;5.Department of Cardiology, Regional Hospital, N-Trondheim, Norway,;6.Department of Internal Medicine, Central Hospital, Arendal, Norway,;7.Department of Paediatric Cardiology, University Hospital, N-Oslo, Norway,;8.Department of Otorhinolaryngology, Hospital of N-Namdal, N-Namdal, Norway, |
