E. A. Toneev
Regional Clinical Cancer Center; Ulyanovsk State University
Russian Federation

Evgeniy A. Toneev, Thoracic surgeon, Regional Clinical Cancer Center, postgraduate student at the University Surgery Department, medical faculty of Ulyanovsk State University

Ulyanovsk

A. L. Charyshkin
Ulyanovsk State University
Russian Federation

Aleksey L. Charyshkin, MD, PhD, DSc, Prof., Head of the University Surgery Department, medical faculty of Ulyanovsk State University 

Ulyanovsk

N. V. Dengina
Regional Clinical Cancer Center; Ulyanovsk State University
Russian Federation

Natalya V. Dengina, MD, PhD, Head of Radiotherapy Department Regional Clinical Cancer Center, assistant professor at the Department of Diagnostic Radiology and Oncology, medical faculty of Ulyanovsk State University

Ulyanovsk

A. V. Zhinov
Regional Clinical Cancer Center
Russian Federation

Anatoliy V. Zhinov, MD, PhD, Surgeon, Head of Surgery Department No. 1 

Ulyanovsk

A. A. Martynov
Regional Clinical Cancer Center
Russian Federation

Aleksandr A. Martynov, Thoracic surgeon, Head of the Thoracic Surgery Department

Ulyanovsk

S. V. Gordonov
Regional Clinical Cancer Center
Russian Federation

Sergey V. Gordonov, Surgeon, Surgery Department No. 1

Ulyanovsk

M. M. Lazarevskiy
Regional Clinical Cancer Center
Russian Federation

Mikhail Lazarevskiy, MD, pathologist, Department of Pathomorphology 

Ulyanovsk