1. From the Department of Anatomic Pathology, Cleveland Clinic, Cleveland, Ohio (Dr Dyhdalo); the Department of Pathology, SUNY Downstate Medical Center, Brooklyn, New York (Dr Howanitz); the Department of Pathology, Virginia Commonwealth University, Richmond (Dr Wilkinson); the Department of Biostatistics, College of American Pathologists, Northfield, Illinois (Ms Souers); and the Department of Pathology, Henry Ford West Bloomfield Hospital, Detroit, Michigan (Dr Jones).