V. I. Egorov
Kazan State Medical University; Republican Clinical Oncology Dispensary named after prof. M.Z. Sigal
Russian Federation

Vasiliy I. Egorov – Cand. of Sci. (Med.), Associate Professor of the Department of Oncology, Radiation Diagnostics and Radiation Therapy; Oncologist, 

49, Butlerov str., Kazan, 420000;

29, Sibirskij trakt, Kazan, 420029.

B. F. Rakhmatullin
Republican Clinical Oncology Dispensary named after prof. M.Z. Sigal
Russian Federation

Bulat F. Rakhmatullin – Anesthesiologist-resuscitator,

29, Sibirskij trakt, Kazan, 420029.

K. K. Sadykov
Republican Clinical Oncology Dispensary named after prof. M.Z. Sigal
Russian Federation

Kamil K. Sadykov – Head of the Department of Anesthesiology and Intensive Care No. 2, 

29, Sibirskij trakt, Kazan, 420029.