A. N. Belyaev
N.P. Ogarev Mordovia State University
Russian Federation

Belyaev Alexander Nazarovich — Doct. of Med. Sci., Professor, Head of the N.I. Atyasov Chair of General Surgery 

For correspondence: Belyaev Alexander Nazarovich — Republican Clinical Hospital, 14/5, Pobedy str., Saransk, 430013, Russian Federation

S. I. Khvostunov
N.P. Ogarev Mordovia State University
Russian Federation

Khvostunov Sergey Ivanovich — Cand. of Med. Sci., Senior Lecturer of the N.I. Atyasov Chair of General Surgery

S. A. Belyaev
N.P. Ogarev Mordovia State University
Russian Federation

Belyaev Sergey Aleksandrovich — Doct. of Med. Sci., Professor of the N.I. Atyasov Chair of General Surgery

S. V. Kostin
N.P. Ogarev Mordovia State University
Russian Federation

Kostin Sergey Vladimirovich — Cand. of Med. Sci., Senior Lecturer of the N.I. Atyasov Chair of General Surgery