title: [Epidemiology of gastroduodenal ulcer].
authors.forename: L B
authors.initials: LB
authors.lastname: Lazebnik
authors.forename: M G
authors.initials: MG
authors.lastname: Guseĭnzade
authors.forename: I A
authors.initials: IA
authors.lastname: Li
authors.forename: L I
authors.initials: LI
authors.lastname: Efremov
mesh_terms: D002391:Catchment Area, Health; D006801:Humans; D015994:Incidence; D010437:Peptic Ulcer / Q000453:epidemiology* / Q000503:physiopathology; D015995:Prevalence; D012426:Russia / Q000453:epidemiology