A. A. Borovaya
Northern State Medical University
Russian Federation

Anastasiya A. Borovaya, Clinical Intern at the Department of Pediatric Surgery

Prospect Troitsky, 51, Arkhangelsk, 163069

A. S. Ulanova
Northern State Medical University; Arkhangelsk Regional Children’s Clinical Hospital named after P. G. Vyzhletsov
Russian Federation

Anna S. Ulanova, Pediatric Oncologist at the Arkhangelsk Regional Children’s Clinical Hospital named after P. G. Vyzhletsov

I. A. Turabov
Northern State Medical University; Arkhangelsk Regional Children’s Clinical Hospital named after P. G. Vyzhletsov
Russian Federation

Ivan A. Turabov, D.M.Sc., Professor, Head of the Department of Pediatric Surgery

V. A. Mitrofanov
Northern State Medical University; Arkhangelsk Regional Children’s Clinical Hospital named after P. G. Vyzhletsov
Russian Federation

Vyacheslav A. Mitrofanov, Pediatric Oncologist at the Arkhangelsk Regional Children’s Clinical Hospital named
after P. G. Vyzhletsov

A. S. Kulikov
Northern State Medical University; Arkhangelsk Regional Children’s Clinical Hospital named after P. G. Vyzhletsov
Russian Federation

Alexander S. Kulikov, Pediatric Oncologist at the Arkhangelsk Regional Children’s Clinical Hospital named after P. G. Vyzhletsov