I. N. Zakharova
Russian Medical Academy of Continuing Postgraduate Education
Russian Federation

Irina N. Zakharova, Dr. of Sci. (Med.), Professor, Honoured Doctor of Russia, Head of Speranskiy Chair for Paediatrics with Polyclinic Paediatrics Module

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

I. V. Berezhnaya
Russian Medical Academy of Continuing Postgraduate Education
Russian Federation

Irina V. Berezhnaya, Cand. of Sci. (Med.), District Children’s Gastroenterologist for Northwest Administrative District of Moscow, Assistant Professor of Speranskiy Chair for Paediatrics with Polyclinic Paediatrics Module

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

S. V. Shishkina
Haven LLC – Medical Hospital Lapino, Children’s Clinical Diagnostic Center
Russian Federation

Svetlana V. Shishkina, Cand. of Sci. (Med.), Pediatrician, Gastroenterologist

111, Lapino village, Odintsovo district, Moscow region, 143081