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Correction

Case Records of the Massachusetts General Hospital (Case 21-1993)

N Engl J Med 1993; 329:443August 5, 1993

Article

Case Records of the Massachusetts General Hospital (Case 21-1993) (Case Records of the Massachusetts General Hospital, N Engl J Med 1993:328;1550 - 1558) . On page 1552, in the 14th line of the left-hand column, the term “β2-macroglobulin” should have been “β2-microglobulin.”