Anatoly A. Baulin
Penza Institute for Further Training of Physicians – Branch of the Russian Medical Academy of Continuous Professional Education, Penza
Russian Federation

Doctor of Sciences (Medicine), Associate Professor, Honored Medical Officer of the Russian Federation, Professor

Lyudmila A. Averyanova
City Hospital No. 6 named after G. A. Zakharin, Penza
Russian Federation

Endoscopist Surgeon

Vladimir A. Baulin
Penza Institute for Further Training of Physicians – Branch of the Russian Medical Academy of Continuous Professional Education, Penza
Russian Federation

Candidate of Sciences (Medicine), Associate Professor

Olga A. Baulina
Penza Institute for Further Training of Physicians – Branch of the Russian Medical Academy of Continuous Professional Education, Penza
Russian Federation

Candidate of Sciences (Medicine), Associate Professor