1. From the Department of Pathology, Brigham and Women's Hospital (Dr Lester), the Department of Pathology, Beth Israel Deaconess Medical Center (Dr Connolly), the Department of Surgical Oncology, Massachusetts General Hospital (Dr Smith), and the Department of Medical Oncology, Dana-Farber Cancer Institute (Dr Winer), Boston, Mass; the Department of Pathology and Laboratory Medicine, Cedars-Sinai M