Mandell Brian F, Edwards N Lawrence, Sundy John S, Simkin Peter A, Pile James C
Center for Vasculitis Care and Research, Department of Rheumatic and Immunologic Disease, Cleveland Clinic, Cleveland, OH 44195, USA.
Cleve Clin J Med. 2010 Jun;77 Suppl 2:S2-25. doi: 10.3949/ccjm.77.s2.01.