1. Department of Doctoral Studies, Riga Stradins University, Riga, Latvia
2. Department of Oral and Maxillofacial Surgery, Riga Stradins University, Riga, Latvia
3. Department of Diagnostic Radiology, Riga Stradins University, Riga, Latvia
4. Rudolfs Cimdins Centre of Development and Innovations of Biomaterials, Riga Technical University, Riga, Latvia
5. Department of Statistic, Riga Stradins University, Riga, Latvia