D. S. Vikina
Academician I.P. Pavlov First St. Petersburg State Medical University
Russian Federation

Vikina Daria S. - dentist, PhD student of the Department of propaedeutics of dental diseases

Saint Petersburg

I. N. Antonova
Academician I.P. Pavlov First St. Petersburg State Medical University
Russian Federation

Antonova Irina N. - DSc, Professor, Director of the research Institute of dentistry and oral and maxillofacial surgery, head of the Department of propaedeutics of dental diseases

Saint Petersburg

V. V. Tec
Academician I.P. Pavlov First St. Petersburg State Medical University
Russian Federation

Tec Viktor V. - DSc, Professor, head of the Department of Microbiology and Virology; academi­cian of the Russian Academy of Sciences

Saint Petersburg

T. E. Lazareva
Academician I.P. Pavlov First St. Petersburg State Medical University
Russian Federation

Lazareva Tatyana Е. - a student of the dental faculty

Saint Petersburg