MCTD: a concept which stood the test of time.
University of Missouri, Columbia 65212, USA.
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D019317:Evidence-Based Medicine / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008947:Mixed Connective Tissue Disease / Q000175:diagnosis / Q000266:history* / Q000276:immunology; D014481:United States