Affiliation: | 1. Division of Pediatric Cardiac Surgery, Pediatric Heart Center, University Hospital, Lund, Sweden;2. Division of Cardiology, Pediatric Heart Center, University Hospital, Lund, Sweden;3. Division of Cardiology, Pediatric Heart Center Stockholm/Uppsala, Karolinska University Hospital, Stockholm, Sweden;4. Division of Pediatric Cardiac Surgery, Pediatric Heart Center, University Hospital, Lund, Sweden Division of Tissue Bank, University Hospital, Lund, Sweden |