Authors: R Y Leavitt; A S Fauci; D A Bloch; B A Michel; G G Hunder; W P Arend; L H Calabrese; J F Fries; J T Lie; R W Lightfoot Journal: Arthritis Rheum Date: 1990-08
Authors: J C Jennette; R J Falk; K Andrassy; P A Bacon; J Churg; W L Gross; E C Hagen; G S Hoffman; G G Hunder; C G Kallenberg Journal: Arthritis Rheum Date: 1994-02