TY JOUR TI DIAGNOSTICS OF HELICOBACTER PYLORI INFECTION BY ENZYME IMMUNOASSAY IN PATIENTS WITH CALCULOUS CHOLECYSTITIS KW JO Acta biomedica scientifica AU Yashnov, A.A. AU Lobanov, S.L. AU Konovalova, O.G. AU Hanina, Y.S. PY 2017 IS 2 PB Scientific Center for Family Problems and Human Reproduction