1. Department of Periodontal Diseases and Oral Mucosa Diseases, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
2. Dental Office Reanata and Dariusz Paliga, Aleja Niepodległości 3/lok 2, 35-303 Rzeszów, Poland
3. Department of Microbiology and Immunology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, 40-055 Katowice, Poland
4. Photomedicine, Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK
5. Department of Internal Diseases, Angiology and Physical Medicine, Center for Laser Diagnostics and Therapy, Medical University of Silesia in Katowice, 41-902 Bytom, Poland
6. Laser Laboratory, Dental Surgery Department, Wroclaw Medical University, 50-425 Wroclaw, Poland
7. Department of Periodontics, School of Dentistry, Virginia Commonwealth University, Richmond, VA 23284, USA
8. Department of General Dentistry, Medical University of Lodz, 251 Pomorska St., 92-213 Lodz, Poland