title: [Various changes in the characteristics of peptic ulcer during the past 20 years (according to the data of therapeutic-preventive institutions of Petrozavodsk)].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000150:complications / Q000453:epidemiology; D012426:Russia; D012744:Sex Ratio; D014505:Urban Population
vernacular_title: O nekotorykh izmeneniiakh v kharakteristike iazvennoĭ bolezni za poslednie dva desiatiletiia (o dannym leche no-profilakticheskikh uchrezhdeniĭ Petrozavodska).