RT Journal Article SR Electronic T1 Circulating Endothelial Cells and Vasculitis JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP SII-109 OP SII-109 VO 69 IS 4 suppl 2 A1 Woywodt, A A1 Streiber, F A1 de Groot, K A1 Haller, H A1 Haubitz, M YR 2002 UL http://www.ccjm.org/content/69/4_suppl_2/SII-109.1.abstract AB