1. Department of Otorhinolaryngology and Head & Neck SurgeryUniversity of Szeged Szeged Hungary
2. Department of Pediatrics and Pediatric Health CenterUniversity of Szeged Szeged Hungary
3. Department of Anesthesiology and Intensive TherapyUniversity of Szeged Szeged Hungary
4. Department of Otorhinolaryngology, Head and Neck SurgeryUniversity Hospital of Lausanne Lausanne Switzerland