1. Division of Dentofacial Anomalies, Department of Maxillofacial Orthopedics and Orthodontics, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland
2. Department of Experimental Dentistry, Wroclaw Medical University, 50-425 Wroclaw, Poland
3. Department of Maxillofacial Surgery, Medical University of Lodz, 90-647 Lodz, Poland
4. Department of Dental Surgery, Wroclaw Medical University, 50-425 Wroclaw, Poland