K. D. Khalin
Clinical Hospital “RZhD-Medicine”; Pacific State Medical University
Russian Federation

Konstantin D. Khalin — Clinical Doctor (endoscopy), Department of Endoscopy; Postgraduate Student, Institute of Surgery.

690002, Vladivostok, Ostryakova avenue, 2.

M. Yu. Agapov
St. Petersburg City Clinical Oncology Dispensary
Russian Federation

Mikhail Yu. Agapov — Dr. Sci. (Med.), Cninical Doctor (endoscopy), Department of Endoscopy.

198255, St. Petersburg, Veteranov avenue, 56.

L. V. Zvereva
Clinical Hospital “RZhD-Medicine”
Russian Federation

Lyudmila V. Zvereva — Pathologist, Head of the Department of Pathology.

690003, Vladivostok, Verkhneportovaya str., 25.

K. V. Stegniy
Pacific State Medical University; Far Eastern Federal University
Russian Federation

Kirill V. Stegniy — Dr. Sci. (Med.), Prof., Corresponding Member of the Russian Academy of Sciences, Director, Institute of Surgery, Pacific State Medical University; Director, Surgery Centre, Far Eastern Federal University.

690002, Vladivostok, Ostryakova avenue, 2.