1. Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS-INSERM-Université Louis Pasteur, 67404 Illkirch-Strasbourg, France
2. Department of Molecular Pathobiochemistry, Gifu University School of Medicine, Gifu 500-8705, Japan
3. Division of Pathology & Laboratory Medicine, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030
4. Department of Biochemistry and Molecular Genetics, University of Virginia H.S.C., Charlottesville, Virginia 22908