1. Department of Internal Medicine, Division of Hematology/Oncology, Columbus, Ohio 43210
2. Department of Molecular Virology, Immunology and Medical Genetics, Division of Human Cancer Genetics and the Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio 43210
3. Department of Urology, Gunma University School of Medicine, Gunma 371-8511, Japan
4. Children's Hospital and Research Institute, Columbus, Ohio 43205