Association between rheumatoid arthritis and psoriasis in total populations.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000150:complications / Q000453:epidemiology*; D002648:Child; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009790:Occupations; D011565:Psoriasis / Q000150:complications / Q000453:epidemiology*; D012737:Sex Factors; D013548:Sweden