1. Student Scientific Society of Civilization Diseases, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland
2. Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland
3. Department of General Dentistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland