title: The natural history of peptic ulcer disease in Poland. I. The number of patients and their general characteristics.
abstract: Using the system of database from the memory of a computer information is presented on 5813 patients including their number, sex, occupation, educational level, conditions of life, conditions of work and psychoemotional features.
authors.affiliation: Postgraduate Medical Education Centre, Warszawa, Poland.
authors.forename: E
authors.initials: E
authors.lastname: Ruzyłło
authors.forename: J
authors.initials: J
authors.lastname: Biernat
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D008875:Middle Aged; D010437:Peptic Ulcer / Q000453:epidemiology*; D011044:Poland / Q000453:epidemiology