title: [Rheumatoid diseases in Poland in 1973 based on data of patients registered at rheumatology outpatient departments. I. Methods, studied groups, preliminary results].
mesh_terms: D000328:Adult; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011044:Poland; D013167:Spondylitis, Ankylosing / Q000453:epidemiology*
vernacular_title: Choroby reumatoidalne w Polsce w r. 1973 na podstawie danych o chorych zarejestrowanych w poradniach reumatologicznych. I. Metody, grupa badana, wstepne wyniki.