V.V. KATYNOV1, L.N. IVANOV2, O.E. LOGINOV1, S.V. NAUMOV1 1Specialized cardiosurgical clinical hospital, 209 Vaneev St., Nizhny Novgorod, Russian Federation, 603950 ²Nizhny Novgorod State Medical Academy, 10/1 Minin and Pozharskiy square, Nizhny Novgorod, Russian Federation, 603005 Katynov V.V. — physician of the 5th Surgery Department, tel. (831) 417-75-88, e-mail: [email protected] Ivanov L.N. — D. Med. Sc., Professor of the […]