Lower numbers of FoxP3 and CCR4 co-expressing cells in an elevated subpopulation of CD4(+)CD25(high) regulatory T cells from Wegener's granulomatosis - Klapa, S; Mueller, A; Csernok, E; Fagin, U; Klenerman, P; Holl-Ulrich, K; Gross, W; Lamprecht, P (2010)