1. Laser Laboratory, Department of Dental Surgery, Wroclaw Medical University, Wroclaw, Poland.
2. Department of Orthodontics, Dentimed Outpatient Clinic, Kościan, Poland.
3. Private Dental Practice, Wschowa, Poland.
4. Department of Dental Surgery, Wroclaw Medical University, Wroclaw, Poland.
5. Department of Orthodontics, Technische Universität Dresden, Dresden, Germany.
6. The School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom.
7. Department of Anatomy, Poznan University of Medical Sciences, Poznan, Poland.
8. Department of Biomaterials and Experimental Dentistry and Poznan University of Medical Sciences, Poznan, Poland.
9. Department of Anatomy and Poznan University of Medical Sciences, Poznan, Poland.
10. Department of Histology and Embryology, Poznan University of Medical Sciences, Poznan, Poland.
11. Department of Obstetrics and Gynaecology, University Hospital and Masaryk University, Brno, Czech Republic.
12. Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University, Toruń, Poland.
13. Department of Dental Science, Faculty of Medicine, University of Liege, Liege, Belgium.
14. Department of Periodontics, Virginia Commonwealth University School of Dentistry, Richmond, Virginia, USA.