1. Institution for Women's and Children's Health Karolinska Institutet StockholmSweden
2. Department of Pediatric Cardiology Astrid Lindgren Children's Hospital StockholmSweden
3. Institute of Health and Care Sciences University of Gothenburg GothenburgSweden
4. KU Leuven Department of Public Health and Primary Care Leuven Belgium
5. Department of Pediatric Surgery Astrid Lindgren Children's Hospital StockholmSweden
6. Department of Clinical Sciences, Pediatrics Umeå University Umeå Sweden
7. Department of Pediatric Cardiology Skåne University Hospital Lund Sweden
8. The Red Cross University College Stockholm Sweden
9. Department of Pediatric Cardiology The Queen Silvia Children's Hospital Gothenburg Sweden