System of job analysis for use in studying rheumatoid complaints in industrial workers.
D000367:Age Factors; D000368:Aged; D006801:Humans; D008131:London; D008297:Male; D008875:Middle Aged; D009784:Occupational Diseases / Q000453:epidemiology*; D009787:Occupational Medicine; D012216:Rheumatic Diseases / Q000453:epidemiology*; D013997:Time Factors