1. Division of Oral Surgery, Faculty of Medicine, Medical University of Gdańsk, 7 Dębinki Street, 80-211 Gdańsk, Poland
2. Department of Pediatric Dentistry, Faculty of Medicine, Medical University of Gdańsk, 18 Orzeszkowa Street, 80-204 Gdańsk, Poland
3. Division of Orthodontics, Faculty of Medicine, Medical University of Gdańsk, Al. Zwycięstwa 42c, 80-210 Gdańsk, Poland
4. Individual Dental Practice Łukasz Adamski, 3b Stawiska, 83-431 Stary Bukowiec, Poland
5. Department of Dental Prosthetic, Faculty of Medicine, Medical University of Gdańsk, 18 Orzeszkowa Street, 80-204 Gdańsk, Poland
6. Individual Dental Practice Sandra Barkowska, 25 Rubinowa Street, 83-422 Lubań, Poland
7. Department of Radiology, Faculty of Medicine, Medical University of Gdańsk, 17 Smoluchowskiego Street, 80-216 Gdańsk, Poland