1. Department of Pediatric Anesthesia Istituto Giannina Gaslini Genoa Italy
2. Department of Radiology Istituto Giannina Gaslini Genoa Italy
3. Department of Medicine Institute of Radiology University of Udine Udine Italy
4. University Hospital S. Maria della Misericordia of Udine Udine Italy
5. Medical Student University of Genoa Genoa Italy
6. Pediatric Airway Team Unit Istituto Giannina Gaslini Genoa Italy
7. Anesthesiology and Intensive Care Clinic Department of Medicine University of Udine Udine Italy