T. M. Chernova
Saint Petersburg State Pediatric Medical University 
Russian Federation

 Cand. Sc. (Med.), Associate Professor at the Department of Infectious Diseases in Children named after Professor M.G. Danilevich

 Litovskaya str 2, Saint Petersburg 194100, Russian Federation 

E. B. Pavlova
Saint Petersburg State Pediatric Medical University 
Russian Federation

 Cand. Sc. (Med.), Associate Professor at the Department of Pharmacology with a course in Clinical Pharmacology and Pharmacoeconomics 

 Litovskaya str 2, Saint Petersburg 194100, Russian Federation 

V. N. Timchenko
Saint Petersburg State Pediatric Medical University 
Russian Federation

 Dr. Sc. (Med.), Professor, Head of the Department of Infectious Diseases in Children named after Professor M.G. Danilevich 

 Litovskaya str 2, Saint Petersburg 194100, Russian Federation 

E. O. Ermakova
Saint Petersburg State Pediatric Medical University 
Russian Federation

 Student at the Pediatric Faculty 

 Litovskaya str 2, Saint Petersburg 194100, Russian Federation 

S. Yu. Uskova
Saint Petersburg State Pediatric Medical University 
Russian Federation

 Student at the Pediatric Faculty 

 Litovskaya str 2, Saint Petersburg 194100, Russian Federation 

A. A. Astakhova
Saint Petersburg State Pediatric Medical University 
Russian Federation

 Student at the Faculty of Dentistry 

 Litovskaya str 2, Saint Petersburg 194100, Russian Federation 

I. A. Egorova
Saint Petersburg City Polyclinic No. 24 
Russian Federation

 Head of the Children Polyclinic Department No. 18

 Obvodny Canal emb. 123, Saint Petersburg 190013, Russian Federation 

A. A. Zherebtsova
Saint Petersburg City Polyclinic No. 27 
Russian Federation

 Head of the Office of Infectious, Parasitic Diseases and Immunoprophylaxis of the Children Polyclinic Department

 Glinki str. 8A, Saint Petersburg 190068, Russian Federation