Perkins Robert M, George Rachel, Fox Charles R, Yuan Christina M
Department of Internal Medicine, Nephrology Service, Walter Reed Army Medical Center, 6900 Georgia Ave NW, Washington, DC 20307, USA.
Nephrol Dial Transplant. 2007 Apr;22(4):1241-6. doi: 10.1093/ndt/gfl828. Epub 2007 Feb 13.