G. R. Sagitova
Astrakhan State Medical University
Russian Federation

Gulnara R. Sagitova - Dr. Sci. (Med.), Professor of the Department of Hospital Pediatrics and Neonatology, Astrakhan State Medical University.

121, Bakinskaya St., Astrakhan, 414000

A. A. Antonova
Astrakhan State Medical University
Russian Federation

Alyona A. Antonova - Cand. Sci. (Med.), Associate Professor, Associate Professor of the Department of Hospital Pediatrics and Neonatology, Astrakhan State Medical University.

121, Bakinskaya St., Astrakhan, 414000

O. V. Davydova
Astrakhan State Medical University
Russian Federation

Oksana V. Davydova - Cand. Sci. (Med.), Associate Professor, Associate Professor of the Department of Hospital Pediatrics and Neonatology, Astrakhan State Medical University.

121, Bakinskaya St., Astrakhan, 414000

N. Y. Nikulina
Regional Children’s Clinical Hospital named after N.N. Silishcheva
Russian Federation

Nadezhda Y. Nikulina - Head of the Endocrinology Department, Regional Children’s Clinical Hospital named after N.N. Silishcheva.

6, Medikov St., Astrakhan, 414011

V. M. Sereda
Saint Petersburg State Pediatric Medical University
Russian Federation

Vasily M. Sereda - Dr. Sci. (Med.), Professor, Professor of the Department of Social Pediatrics and Healthcare Organization, Saint Petersburg State Pediatric Medical University.

2, Litovskaya St., St Petersburg, 194100

P. M. Abdurakhimova
Astrakhan State Medical University
Russian Federation

Patimat M. Abdurakhimova - Student of the Pediatric Faculty, Astrakhan State Medical University.

121, Bakinskaya St., Astrakhan, 414000