Affiliation: | 1. 2nd Pediatric Department, School of Medicine, Aristotle University of Thessaloniki, , AHEPA Hospital, Thessaloniki, Greece;2. 4th Pediatric Department, School of Medicine, Aristotle University of Thessaloniki, , Papageorgiou Hospital, Thessaloniki, Greece;3. 1st Department of Otorhinolaryngology Head and Neck Surgery, School of Medicine, Aristotle University of Thessaloniki, , AHEPA Hospital, Thessaloniki, Greece;4. 3rd Pediatric Department, School of Medicine, Aristotle University of Thessaloniki, , Ippokratio Hospital, Thessaloniki, Greece |