L. A. Otdelnov
Privolzhsky Research Medical University; Nizhny Novgorod City Clinical Hospital No. 13 of Avtozavodsky District
Russian Federation

Leonid A. Otdelnov – Cand. Sc. (Med.), Associate Professor at the Department of Surgery named after B.A. Korolev, Minin and Pozharsky square 1/10, Nizhny Novgorod 603000;

Surgeon at the Surgical Department, Patriotov str. 51, Nizhny Novgorod 603018
No. 1, 

S. S. Ptushko
Privolzhsky Research Medical University
Russian Federation

Sofia S. Ptushko – Student at the Faculty of Medicine, 

Minin and Pozharsky square 1/10, Nizhny Novgorod 603000

N. D. Ulanova
Privolzhsky Research Medical University; Nizhny Novgorod City Clinical Hospital No. 13 of Avtozavodsky District
Russian Federation

Nina D. Ulanova – Teaching Assistant at the Department of Endocrinology and Internal Medicine, Minin and Pozharsky square 1/10, Nizhny Novgorod 603000;

Primary Care Physician,