The intrafamilial transmission of rheumatoid arthritis. I. Design of the study.
D000704:Analysis of Variance; D001172:Arthritis, Rheumatoid / Q000235:genetics*; D005190:Family; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D008433:Mathematics; D008824:Michigan; D012494:Sampling Studies