1. Department of Human Immunology, Research Institute for Frontier Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
2. Department of Respiratory Medicine and Allergology, Sapporo Medical University School of Medicine, Sapporo, Japan
3. Department of Otolaryngology, Sapporo Medical University School of Medicine, Sapporo, Japan, Sapporo, Japan
4. Department of Rheumatology and Clinical Immunology, Sapporo Medical University School of Medicine, Sapporo, Japan