1. Department of Pediatrics, Nantan General Hospital
2. Department of Pediatrics, Tanabe Central Hospital
3. Department of Pediatrics, Kyoto Prefectural University of Medicine
4. Department of Pediatrics, North Medical Center Kyoto prefectural University of Medicine
5. Kyoto Prefectural institute of Public Health and Environment
6. Yamanobe Pediatric Clinic
7. Department of Microbiology, Kanazawa Medical University School of Medicine
8. Yamagata Kousei Hospital