1. Department for Congenital Disorders, Statens Serum Institute, Copenhagen, Denmark
2. Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
3. Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
4. Department of Cardiology, Roskilde Hospital, Roskilde, Denmark
5. Department of Medicine B, The Heart Center, Copenhagen, Denmark
6. Department of Cardiology, Royal Brisbane Hospital and School of Medicine, University of Queensland, Brisbane, Australia
7. Queensland Clinical Genetics Service, Royal Children’s Hospital and School of Medicine, Brisbane, Australia