From the Department of Medicine, University of Florida College of Medicine, Gainesville, FL; Center on Outcomes, Research and Education at Evanston Northwestern Healthcare, Evanston, IL; University of Kentucky College of Medicine, Lexington, KY; Independent Consultant, Trout Creek, MI; and Center for International Blood and Marrow Transplant Research, Health Policy Institute, Medical College of Wisconsin, Milwaukee, WI (At 2007-04-10)