M. Z. Khasanov
Kazan State Medical Academy – Branch of Russian Medical Academy of Continuous Professional Education; Republican Clinical Oncological Dispensary of Minzdrav of the Republic of Tatarstan
Russian Federation

Marat Z. Khasanov 

420012, Kazan, Butlerova str., 36

420029, Kazan, Siberian path, 29

M. G. Tukhbatullin
Kazan State Medical Academy – Branch of Russian Medical Academy of Continuous Professional Education
Russian Federation

Munir G. Tukhbatullin, doctor of medical sciences, professor 

420012, Kazan, Butlerova str., 36

N. A. Savelyeva
Kazan State Medical Academy – Branch of Russian Medical Academy of Continuous Professional Education; Republican Clinical Oncological Dispensary of Minzdrav of the Republic of Tatarstan
Russian Federation

Natalia A. Savelyeva, candidate of medical sciences 

420012, Kazan, Butlerova str., 36

420029, Kazan, Siberian path, 29

V. A. Khachaturyan
Republican Clinical Oncological Dispensary of Minzdrav of the Republic of Tatarstan
Russian Federation

Viktoria A. Khachaturyan 

420029, Kazan, Siberian path, 29