1. Department of Orthodontics, Pomeranian Medical University of Szczecin, Al. Powstańców Wlkp. 72, Szczecin 70111, Poland
2. Department and Clinic of Maxillofacial Orthopaedics and Orthodontics, Poznan University of Medical Sciences, 70 Bukowska Street, Poznań 60812, Poland
3. Department of Maxillofacial Orthopaedics and Orthodontics, Wroclaw Medical University, 26 Krakowska Street, Wrocław 50425, Poland
4. Department of Maxillofacial Orthopaedics and Orthodontics, Division of Facial Abnormalities, Wroclaw Medical University, 26 Krakowska Street, Wrocław 50425, Poland
5. Department of Prosthetic Dentistry, Wroclaw Medical University, 26 Krakowska Street, Wrocław 50425, Poland