1. Division of Microbiology, Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
2. Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
3. Center of Excellence in Emerging and Re-emerging Diarrheal Viruses, Chiang Mai University, Chiang Mai, Thailand
4. Hikita Pediatric Clinic, Gunma, Japan
5. Faculty of Public Health, Chiang Mai University, Chiang Mai, Thailand