A. V. Burlutskaya
Kuban State Medical University, Ministry of Healthcare of the Russian Federation 
Russian Federation

 Alla V. Burlutskaya — Dr. Sci. (Med.), Assoc. Prof., Head of the Department of Paediatrics No. 2

 Victory Square, 1, Krasnodar, 350007, Russia 

A. V. Statova
Kuban State Medical University, Ministry of Healthcare of the Russian Federation
Russian Federation

 Anastasia V. Statova — Cand. Sci. (Med.), Assoc. Prof., Department of Paediatrics No. 2

  Victory Square, 1, Krasnodar, 350007, Russia 

O. V. Dolbneva
Children’s Regional Clinical Hospital, Ministry of Healthcare of the Russian Federation
Russian Federation

 Olga V. Dolbneva — Head of the Department of Gastroenterology

 Pobedy str. 85, Krasnodar, 350007, Russia 

I. I. Borlakova
Kuban State Medical University, Ministry of Healthcare of the Russian Federation
Russian Federation

 Ilyana I. Borlakova — Assistant of the Department of Paediatrics No. 2

 Victory Square, 1, Krasnodar, 350007, Russia 

J. V. Pisotskaya
Kuban State Medical University, Ministry of Healthcare of the Russian Federation
Russian Federation

 Julia V. Pisotskaya* — Resident of the first year of study, Department of Paediatrics No. 2

tel.: +7 (989) 280-05-22 

 Victory Square, 1, Krasnodar, 350007, Russia 

D. V. Ustyuzhanina
Kuban State Medical University, Ministry of Healthcare of the Russian Federation 
Russian Federation

 Diana V. Ustyuzhanina — Clinical Resident of the Department of Paediatrics No. 2

 Victory Square, 1, Krasnodar, 350007, Russia