1. Department of Microbiology, Chiang Mai University, Faculty of Medicine, Chiang Mai, Thailand
2. Center of Excellence in Emerging and Re-emerging Diarrheal Viruses, Chiang Mai University, Chiang Mai, Thailand
3. Department of Pathology and Microbiology, Nihon University School of Medicine, Tokyo, Japan
4. Department of Developmental Medical Sciences, School of International Health, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
5. Institute of blood transfusion, Chinese Academy of Medical Sciences and Peking Union Medical College, Chengdu, China