[Incidence and characteristics of rheumatoid arthirits in old age. Clinico-statistical contribution].
D000368:Aged; D000369:Aged, 80 and over; D001168:Arthritis; D001172:Arthritis, Rheumatoid; D001699:Biometry; D006801:Humans; D015994:Incidence
ARTHRITIS, RHEUMATOID/in old age