title: [Pathogenetic features of recurrent peptic ulcer in the elderly].
authors.forename: S A
authors.initials: SA
authors.lastname: Sergeev
authors.forename: N I
authors.initials: NI
authors.lastname: Pavlova
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000209:etiology* / Q000473:pathology / Q000517:prevention & control*; D012008:Recurrence