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N. L. Harris, E. S. Jaffe, J. Diebold, G. Flandrin, H. K. Muller-Hermelink, J.Vardiman, T. A. Lister & C. D. Bloomfield Departments of Pathology. Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA, i\'ationat Cancer Institute, Belhesda, MD, USA; Hotel Dieu, Paris, France; Hopital Necker, Paris, France, University of Wurzburg, Wurzburg, Germany; Pritzker School ofMedicine, University of Chicago, Chicago, IL, USA, 1 Department of Medical Oncology, St. Bartholomew's Hospital. London, UK, Ohio State University Comprehensive Cancer Center, Columbus, OH, USA * Seepage 1432 for list of committee members