Design of the Wegener's Granulomatosis Etanercept Trial (WGET) by Stone, J, Uhlfelder, M, Moore, A, Hoffman, G, Holbrook, J, Meinert, C, Donithan, J, Min, N, Murrow, L, Oziemkowska, M, Tibbs, A, Tonascia, J, Van Natta, M, McCune, J, Coomer, B, Gilson, B, Haftel, H, Martinez, F, Rose, N, Burek, C, Barin, J, Talor, M, Canner, P, Conn, D, Klippel, J