The influence of genetical and environmental factors on the prevalence of rheumatoid arthritis and rheumatoid factor.
D000367:Age Factors; D001172:Arthritis, Rheumatoid / Q000453:epidemiology* / Q000235:genetics; D001789:Blood Group Antigens; D004200:Diseases in Twins / Q000453:epidemiology; D004777:Environment; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007239:Infections / Q000150:complications; D007558:Italy; D008297:Male; D008903:Minerals; D008906:Mining; D009790:Occupations; D012217:Rheumatoid Factor; D012424:Rural Population; D012959:Socioeconomic Factors; D013315:Stress, Psychological / Q000150:complications; D014505:Urban Population
D001789:Blood Group Antigens; D008903:Minerals; D012217:Rheumatoid Factor