Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector5464010.17816/kazmj54640Research ArticleFOURTH INTERNATIONAL CONGRESS OF GASTROENTEROLOGISTSBukovK. M.<p>Academician</p>info@eco-vector.comKurcinI. T.<p>Professor</p>info@eco-vector.com29051959403951041312202013122020Copyright © 2021, Bukov K.M., Kurcin I.T.2021<p>Peptic ulcer, Liver disease, Pancreatic gland disease, Bowel disease</p>Kazan Medical ArchivesКазанский медицинский архив