1. Department of Pediatrics, National Hospital Organization Kumamoto Medical Center, Kumamoto, Japan.
2. Department of Pediatrics, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
3. Department of Pediatrics, Kumamoto University Hospital, Kumamoto, Japan.
4. Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan.
5. General Research and Development Institute, Hoyu Co., Ltd., Aichi, Japan.
6. Department of Food and Nutrition, Beppu University, Oita, Japan.