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 A Woywodt A1 F Streiber A1 K de Groot A1 H Haller A1 M Haubitz YR 2002 UL http://www.ccjm.org/content/69/4_suppl_2/SII-109.1.abstract AB