[Familial study on the incidence of the rheumatoid factor].
D001168:Arthritis; D001172:Arthritis, Rheumatoid; D006801:Humans; D015994:Incidence; D012106:Research; D012217:Rheumatoid Factor
D012217:Rheumatoid Factor
ARTHRITIS, RHEUMATOID; RHEUMATOID FACTOR