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

 MD, Surgeon, Thoracic Surgery Department, Regional Clinical Oncology Center; PhD student, Department of Faculty Surgery, Faculty of Medicine named after T.Z. Biktimirova, Institute of Medicine, Ecology and Physical Culture

90, 12 September Street, 432017, Ulyanovsk, Russia

42, Leo Tolstoy Street, 432970, Ulyanovsk, Russia 

O. V. Pikin
P.A. Herzen Moscow Cancer Institute – branch of the Federal  State Budgetary Institution «National Medical Research Radiological Center» of the Ministry of Health of Russia
Russian Federation

 MD, DSc, Head of the Thoracic Surgery Department

 3, 2nd Botkinsky pr., 125284, Moscow, Russia 

V. I. Orelkin
Regional Clinical Oncology Center  
Russian Federation

 MD, Surgeon, Abdominal Surgery Department

90, 12 September Street, 432017, Ulyanovsk, Russia

A. L. Charyshkin
Ulyanovsk State University 
Russian Federation

 MD, Professor, Head of the Department of Faculty Surgery, Faculty of Medicine named after T.Z. Biktimirova, Institute of Medicine, Ecology and Physical Culture

42, Leo Tolstoy Street, 432970, Ulyanovsk, Russia 

A. A. Martynov
Regional Clinical Cancer Clinic  
Russian Federation

 MD, Head of Thoracic Surgery Department

90, 12 September Street, 432017, Ulyanovsk, Russia

Ya. M. Remizova
Ulyanovsk State University
Russian Federation

 student, Faculty of Medicine named after T.Z. Biktimirova, Institute of Medicine, Ecology and Physical Culture

42, Leo Tolstoy Street, 432970, Ulyanovsk, Russia 

P. M. Chavkin
Ulyanovsk State University 
Russian Federation

 MD, PhD, Assistant Professor, Department of Hospital Surgery, Anesthesiology, Intensive Care, Urology, Traumatology and Orthopedics. Faculty of Medicine named after T.Z. Biktimirova, Institute of Medicine, Ecology and Physical  Culture

 42, Leo Tolstoy Street, 432970, Ulyanovsk, Russia