Institution: | 1. Department of Human Immunology, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan;2. Department of Otolaryngology, Sapporo Medical University School of Medicine, Sapporo, Japan;3. Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan;4. Division of Pathology and Laboratory Medicine, Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo, Japan |