1. From the Department of Pathology, Inje University, Sanggye Paik Hospital (Dr H.-J. Kim), the Department of Pathology, Korea University Hospital (Dr C. H. Kim), and the Department of Pathology, College of Medicine, Catholic University (Dr Choi), Seoul, Korea; and the Department of Pathology, Weill Cornell University, The Methodist Hospital, Houston, Texas (Drs Ayala, Amirikachi, and Ro)