1. Department of Child Surgery;at the Pomeranian Medical University of Szczecin, Szczecin, Poland.
2. Department of Orthodontics;at the Pomeranian Medical University of Szczecin, Szczecin, Poland.
3. Head of Department of Radiological Diagnostics;at the Pomeranian Medical University of Szczecin, Szczecin, Poland.
4. Head of Department of Orthodontics;at the Pomeranian Medical University of Szczecin, Szczecin, Poland.
5. Department of Child Surgery, at the Pomeranian Medical University of Szczecin, Szczecin, Poland.