**Author details**

Guntars Selga1 , M. Sauka1 , L. Aboltina1 , A. Davidova1 , P. Kaipainen2 , D. Kheder1 , T. Westermarck2 and F. Atroshi3

1 Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Rīga Stradiņš Univer‐ sity, Rīga, Latvia

