1. Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
2. Department of Periodontology and Oral Medicine, Jagiellonian University, Medical College, Institute of Dentistry, Krakow, Poland
3. Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
4. Department of Periodontology, Medical University of Warsaw, Warsaw, Poland