Twins with rheumatic diseases.
D016918:Arthritis, Reactive / Q000235:genetics; D001172:Arthritis, Rheumatoid / Q000235:genetics; D004200:Diseases in Twins; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D010003:Osteoarthritis / Q000235:genetics; D012216:Rheumatic Diseases / Q000235:genetics*; D012213:Rheumatic Fever / Q000235:genetics; D013167:Spondylitis, Ankylosing / Q000235:genetics; D013223:Statistics as Topic