1. Department of Pediatrics III, Division of Cardiology, Pulmology, Allergology, and Cystic Fibrosis, Innsbruck Medical University, Anichstraße 35, 6020 Innsbruck, Austria
2. Department of Pediatrics I, Innsbruck Medical University, Anichstraße 35, 6020 Innsbruck, Austria
3. Department of Pediatrics, Vienna Medical University, Währinger Gürtel 16, 1090 Vienna, Austria
4. Department for Pediatric Cardiology, National Cerebral and Cardiovascular Center, 5-7-1 Fujishiro-dai, Suita, Osaka 565-8565, Japan