A reappraisal of the measurement of disease occurrence in rheumatoid arthritis.
MacGregor
A J
AJ
Silman
A J
AJ
D001172:Arthritis, Rheumatoid / Q000453:epidemiology*; D004812:Epidemiologic Methods; D004813:Epidemiology / Q000592:standards*; D006801:Humans; D015994:Incidence