Comparative studies of serologic tests f
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J. Ball; R. De Graaff; H. A. Valkenburg; F. Westendorp Boerma
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Article
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1962
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John Wiley and Sons
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English
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## Abstract Sera from a random sample of the population of Rotterdam were tested by a latex fixation test (LFT) in Leiden, a sensitized sheep cell agglutination test (SCAT) in Manchester and a human erythrocyte test (HEAT) in Groningen with an overall agreement of 93.3 per cent. In both rheumatoid