I. N. Kholodova
Russian Medical Academy of Continuous Professional Education
Russian Federation

Irina N. Kholodova - Dr. Sci. (Med.), Professor of the Department of Pediatrics named after G.N. Speransky, Russian Medical Academy of Continuous Professional Education.

2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993

T. N. Tvorogova
Russian Medical Academy of Continuous Professional Education
Russian Federation

Tatiana N. Tvorogova - Cand. Sci. (Med.), Associate Professor of the Department of Pediatrics named after G.N. Speransky, Russian Medical Academy of Continuous Professional Education.

2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993

D. I. Kholodov
Children's City Polyclinic No. 94
Russian Federation

Dmitriy I. Kholodov - Pediatrician, Head of Branch No. 1, Children's City Polyclinic No. 94.

20, Bldg. 2, Vishnevaya St., Moscow,125362

Yu. V. Vasilyev
St Petersburg State Pediatric Medical University
Russian Federation

Yuri V. Vasilyev - Cand. Sci. (Med.), Associate Professor of the Department of General Hygiene, St Petersburg State Pediatric Medical University.

2, Litovskaya St., St Petersburg, 194100

G. E. Zaydenvarg
Russian Medical Academy of Continuous Professional Education
Russian Federation

Galina E. Zaydenvarg - Cand. Sci. (Med.), Associate Professor of the Department of Pediatrics named after G.N. Speransky, Russian Medical Academy of Continuous Professional Education.

2/1, Bldg. 1, Barrikadnaya St., Moscow, 125993