1. Reprints: William E. Winter, MD, Department of Pathology, Laboratory Medicine, and Immunology, University of Florida, College of Medicine, Box 100275, Gainesville, FL 32610-0275.
2. From the Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, College of Medicine, Gainesville, Fla (Drs Winter and Hardt), and the Department of Pathology, Grant Riversides Methodist Hospital, Columbus, Ohio (Dr Fuhrman).