1. Department of Prosthetic Dentistry, Faculty of Dentistry, University of Szeged, 6720 Szeged, Tisza L. krt. 64., Hungary;
2. Department of Obstetrics and Gynecology, Faculty of Medicine, University of Szeged;
3. Institute of Clinical Microbiology, Faculty of Medicine, University of Szeged;
4. Department of Medical Informatics, University of Szeged; and
5. Department of Operative Dentistry and Periodontology, Faculty of Dentistry, University of Szeged