1. From the Department of Pathology, University of Utah School of Medicine, Salt Lake City (Drs Geiersbach, Furtado, Lyon, and Jarboe); ARUP Laboratories, Salt Lake City, Utah (Drs Geiersbach and Lyon); the Department of Pathology, ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, Utah (Dr Paxton, Messrs Jama and Wilson, and Ms Tripp); and the Department of Pathology, Mount Sinai School of Medicine, New York, New York (Dr Thaker).