Affiliation: | 1. Children''s Hospital Medical Center of Northern California, Oakland, Calif., USA;2. Department of Pathology and Laboratory Medicine, University of Nebraska Medical Center, Omaha, Neb., USA;3. Department of Pediatrics, University of Nebraska Medical Center, Omaha, Neb., USA;4. Department of Tumor Biology, Karolinska Institute, Stockholm, Sweden;5. Virolabs Inc., Stockholm, Sweden;6. Department of Pediatrics, University of Connecticut Health Center, Farmington, Conn. USA |