1. From the Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston (Mr Jones and Drs Nazarian, Duncan, Kamionek, Lauwers, Tambouret, Wu, Nielsen, Brachtel, Mark, Sadow, Grabbe, and Wilbur); and the Department of Pathology, Cambridge Health Alliance, Cambridge, Massachusetts (Dr Grabbe). Dr Kamionek is now with the Department of Pathology, Carolinas Pathology Group, Charlotte, North Carolina.