1. Department of Neonatology, University Children’s Hospital, University Medical Centre Ljubljana and Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
2. Community Health Centre, Slovenj Gradec, Slovenia.
3. Department of Radiology, University Children’s Hospital, University Medical Centre Ljubljana and Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
4. Department of Haemato-oncology, University Children's Hospital, University Medical Centre Ljubljana, Ljubljana, Slovenia.