1. Department of Pediatrics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan;
2. Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan;
3. Department of Pathology, Faculty of Medicine, Mansoura University, Egypt;
4. Division of Molecular Medicine, Aichi Cancer Center Research Institute, Nagoya, Japan;
5. Department of Virology, Division of Virology & Immunology, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan;
6. Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan;
7. Department of Virology, Nagoya University Graduate School of Medicine, Nagoya, Japan;
8. Department of Otorhinolaryngology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan