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

Evgeny A. Toneev, MD, PhD, Thoracic Surgeon, Surgical Department of Thoracic Oncology; Associate Professor, Department of Faculty Surgery, Medical Faculty named after T.Z. Biktimirova, Institute of Medicine, Ecology and Physical Education 

90, 12 September St., Ulyanovsk, 432017;
42, L. Tolstogo St., Ulyanovsk, 432000

M. O. Pavlov
Ulyanovsk State University
Russian Federation

Maxim O. Pavlov, 5th-year student, Medical Faculty, Institute of Medicine, Ecology and Physical Education 

42, L. Tolstogo St., Ulyanovsk, 432000

G. G. Alieva
Ulyanovsk State University
Russian Federation

Gunel G. Alieva, 5th-year student, Medical Faculty, Institute of Medicine, Ecology and Physical Education 

42, L. Tolstogo St., Ulyanovsk, 432000