1. Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan
2. Division of Infectious Diseases and Immunology, Saitama Children’s Medical Center, Saitama, Japan
3. Division of Pediatric Cardiology, Saitama Medical University International Medical Center, Saitama, Japan
4. Department of Pediatrics, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
5. Education Center, Asahikawa Medical University, Asahikawa, Japan
6. Department of Molecular Endocrinology and Metabolism, National Research Institute for Child Health and Development, Tokyo, Japan