title: [Epidemiologic characteristics of chronic gastritis. Studies of the iris in mass screening of the population].
mesh_terms: D002908:Chronic Disease; D003937:Diagnosis, Differential; D005756:Gastritis / Q000175:diagnosis / Q000453:epidemiology*; D006801:Humans; D007498:Iris / Q000503:physiopathology*; D008403:Mass Screening; D014586:USSR
vernacular_title: Osobennosti v epidemiologiiata na khronichniia gastrit. Izsledvane na irisa pri masovi pregledi na naselenieto.