A. N. Zav’yalova
Saint-Petersburg State Pediatric Medical University
Russian Federation

Anna N. Zav’yalova, Candidate of Medical Sciences, Associate Professor of the Department of Propaedeutics of Children’s Diseases with a course of General Child Care; Associate Professor of the Department of General Medical Practice; dietitian of the Clinic

 2, Litovskaya str, Saint-Petersburg, 194100 Russia 

M. E. Troshkina
Saint-Petersburg State Pediatric Medical University
Russian Federation

Marina E. Troshkina, 4th year student

 2, Litovskaya str, Saint-Petersburg, 194100 Russia 

L. A. Shcherbak
Saint-Petersburg State Pediatric Medical University
Russian Federation

Lidia A. Shcherbak 4th-year student

 2, Litovskaya str, Saint-Petersburg, 194100 Russia 

V. P. Novikova
Saint-Petersburg State Pediatric Medical University
Russian Federation

Valeria P. Novikova, Doctor of Medical Sciences, Professor, Head of the Department of Propaedeutics of Children’s Diseases with the course of general child care, Head of laboratory of “Medical and Social Problems in Pediatrics”

 2, Litovskaya str, Saint-Petersburg, 194100 Russia