A. A. Baulin
Penza Institute of Advanced Medical Training
Russian Federation

Anatoliy A. Baulin - Dr. Sci. (Med.), Professor, Honored Physician of the Russian Federation, Professor of the Department of Surgery and Endoscopy named after Professor N.A. Baulin, 

8A, Stasov str., Penza, 440060

L. A. Aver'yanova
Clinical Hospital No. 6 named after G.A. Zakharin
Russian Federation

Lyudmila A. Aver'yanova - Head of the admission department, endoscopist surgeon, 

7, Stasov str., Penza, 440071

V. A. Baulin
Penza Institute of Advanced Medical Training
Russian Federation

Vladimir A. Baulin - Cand. Sci. (Med.), Associate Professor of the Department of Surgery and Endoscopy named after Professor N.A. Baulin,

8A, Stasov str., Penza, 440060

O. A. Baulina
Penza Institute of Advanced Medical Training
Russian Federation

Olga A. Baulina - Cand. Sci. (Med.), Associate Professor of the Department of Surgery and Endoscopy named after Professor N.A. Baulin,

8A, Stasov str., Penza, 440060

D. A. Kompaneytseva
Penza State University; Clinical Hospital No. 6 named after G.A. Zakharin
Russian Federation

Dar'ya A. Companeytseva - student of the Medical Institute;

a nurse, 7, Stasov str., Penza, 440071