G. A. Polev
Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology; Ilyinskaya Hospital
Russian Federation

Georgiy A. Polev, Cand. Sci. (Med.), Senior Researcher of the Department of Head and Neck Surgery and Reconstructive Plastic Surgery; Director of the Head and Neck Surgery Center

1, Samora Mashel St., Moscow, 117997;

2, Bldg. 2, Rublevskoe Predmestie St., Glukhovo Settlement, Krasnogorsk, Moscow Region, 143421

N. S. Grachev
Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology
Russian Federation

Nikolai S. Grachev, Dr. Sci. (Med.), Deputy General Director, Head of the Department of Oncology and Pediatric Surgery

1, Samora Mashel St., Moscow, 117997

R. S. Oganesyan
Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology
Russian Federation

Raisa S. Oganesyan, Pediatric Surgeon of the Department of Oncologe, Head and Neck Surgery and neurosurgery

1, Samora Mashel St., Moscow, 117997

E. Yu. Yaremenko
Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology
Russian Federation

Ekaterina Yu. Yaremenko, Laboratory Assistant of the Group of Head and Neck Surgery and Reconstructive Plastic Surgery

1, Samora Mashel St., Moscow, 117997