1. Department of Pediatric Surgery and Intensive Therapy; University Medical Centre Ljubljana; Ljubljana Slovenia
2. Department of Pediatrics; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
3. Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
4. Department for Rhythmology; Heartcenter Leipzig; Leipzig Germany
5. Institute for Biostatistics and Medical Informatics; Faculty of Medicine; University of Ljubljana; Ljubljana Slovenia
6. Medical Department; University Rehabilitation Institute of the Republic of Slovenia; Ljubljana Slovenia
7. Department of Pediatric Endocrinology, Diabetes and Metabolic Diseases; University Children's Hospital, University Medical Centre Ljubljana; Ljubljana Slovenia