L. P. Kotelnikova
Vagner Perm State Medical University
Russian Federation

Liudmila P. Kotelnikova – Doct. of Sci. (Med.), Professor, Head of the Department of Surgery with the Course of Cardio-vascular Surgery and Invasive Cardiology

26, Petropavlovskay str., Perm, 61400

S. A. Plaksin
Vagner Perm State Medical University
Russian Federation

Sergey A. Plaksin – Doct. of Sci. (Med.), Professor of the Department of Surgery with the Course of Cardiovascular Surgery and Invasive Cardiology

26, Petropavlovskay str., Perm, 61400

I. G. Burnyshev
Perm Regional Clinical Hospital
Russian Federation

Ivan G. Burnyshev – Cand. of Sci. (Med.), Head of the Second Surgical Department

43, Kuibyshev str., Perm, 614000

D. V. Trushnikov
Perm Regional Clinical Hospital
Russian Federation

Dmitry V. Trushnikov – Physician of the Endoscopy Department

43, Kuibyshev str., Perm, 614000