| Affiliation: | 1. Department of Public Health, Graduate School of Medicine, Chiba University, , Chiba, Japan;2. Department of Pediatrics, Graduate School of Medicine, Chiba University, , Chiba, Japan;3. Department of Pediatrics, Shimoshizu National Hospital, , Yotsukaido, Japan;4. Department of Allergy and Rheumatology, Chiba Children's Hospital, , Chiba, Japan;5. The First Department of Pediatrics, Toho University Omori Medical Center, , Tokyo, Japan;6. Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Chiba University, , Chiba, Japan;7. Department of Education and Training, Tohoku Medical Megabank Organization, Tohoku University, , Sendai, Japan |
