1. Department of Periodontology; Faculty of Dentistry; Osmangazi University; Eskisehir Turkey
2. Institute of Biomedical Engineering; Bogazici University; Istanbul Turkey
3. Department of Medicine/Invärtes medicin; Helsinki University Central Hospital; Helsinki Finland
4. Institute of Biomedicine/Anatomy; University of Helsinki; Helsinki Finland
5. ORTON Orthopaedic Hospital of the Invalid Foundation; Helsinki Finland
6. COXA Hospital for Joint Replacement; Tampere Finland