Institution: | 1.Department of Pediatrics,University of Southern California School of Medicine, Children's Hospital of Los Angeles,Los Angeles;2.Department of Pathology,University of Southern California School of Medicine,Los Angeles;3.Viral Carcinogenesis Branch, National Cancer Institute, National Institutes of Health,Bethesda;4.Flow Laboratories Incorporated,Rockville;5.Microbiological Associates Inc.,Bethesda |