R. G. Avanesyan
St. Petersburg State Pediatric Medical University, Ministry of Health of Russian Federation; Mariinsky City Hospital, Department of Health of St. Petersburg
Russian Federation

Ruben G. Avanesyan – Doct. of Sci. (Med.), Associate Professor, Head of the Department of General Surgery with Endoscopy Course

Litovskaya str., St. Petersburg, 194100, Russian Federation

56, Liteyniy str., St. Petersburg, 191014, Russian Federation

M. P. Korolev
St. Petersburg State Pediatric Medical University, Ministry of Health of Russian Federation; Mariinsky City Hospital, Department of Health of St. Petersburg
Russian Federation

Mikhail P. Korolev – Doct. of Sci. (Med.), Professor of Department of General Surgery; Endoscopist

Litovskaya str., St. Petersburg, 194100, Russian Federation

56, Liteyniy str., St. Petersburg, 191014, Russian Federation

L. E. Fedotov
St. Petersburg State Pediatric Medical University, Ministry of Health of Russian Federation; Mariinsky City Hospital, Department of Health of St. Petersburg
Russian Federation

Leonid E. Fedotov – Doct. of Sci. (Med.), Head of the 4th Surgical Department of Mariinsky City Hospital; Professor of Department of General Surgery

Litovskaya str., St. Petersburg, 194100, Russian Federation

56, Liteyniy str., St. Petersburg, 191014, Russian Federation

M. E. Gorovoy
St. Petersburg State Pediatric Medical University, Ministry of Health of Russian Federation
Russian Federation

Maksim E. Gorovoy – Senior Assistant of Department of General Surgery

Litovskaya str., St. Petersburg, 194100, Russian Federation