TY - JOUR AU - Kratz, A; Ferraro, M; Sluss, PM; Lewandrowski, KB TI - Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises JO - Laboratory reference values.[Erratum appears in N Engl J Med IS - 23 VL - 351 PY - 2004 SP - 1548 EP - 1563. N1 - ): 2461. N Engl J Med. 2004; 351(15 ER -