| Authors: |
Gierlotka A; Department of Pediatric Otolaryngology, Head and Neck Surgery, the Medical University of Silesia in Katowice, Saint John Paul II Upper Silesian Children's Health Center, Ul. Medyków 16, Katowice, 40-752, 0048322071965, Poland. agierlotka@gczd.katowice.pl., Sordyl R; Department of Pediatric Neurosurgery, Medical University of Silesia, Upper Silesia Children's Healthcare Center, Ul. Medyków 16, Katowice, 40-752, Poland., Bielecki I; Department of Pediatric Otolaryngology, Head and Neck Surgery, the Medical University of Silesia in Katowice, Saint John Paul II Upper Silesian Children's Health Center, Ul. Medyków 16, Katowice, 40-752, 0048322071965, Poland., Mandera M; Department of Pediatric Neurosurgery, Medical University of Silesia, Upper Silesia Children's Healthcare Center, Ul. Medyków 16, Katowice, 40-752, Poland. |