1. From the Department of Cellular Pathology, University of Liverpool, Liverpool, United Kingdom (Dr Helliwell); the Department of Pathology and Immunology, Washington University School of Medicine, Saint Louis, Missouri (Dr Chernock); ANU College of Health and Medicine, Anatomical Pathology, ACT Pathology, Canberra Hospital, Woden, Australia (Dr Dahlstrom); Institute of Pathology, Faculty of Medici