1. Department of Pathology and Laboratory Medicine, East Carolina University, Greenville, NC (W.H., C.Y., J.T.F.).
2. Department of Pathology, Microbiology and Immunology, New York Medical College, Valhalla (P.A.L., N.D.).
3. Department of Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY (P.V.A.).