Affiliation: | 1. Department of Pediatrics, Asahikawa Medical University, Asahikawa, Japan;2. Department of Pediatrics, Sapporo Tokushukai Hospital, Sapporo, Japan;3. Department of Neonatology, Japanese Red Cross Medical Center, Tokyo, Japan;4. Department of Pediatrics, Kochi Medical School, Kochi, Japan;5. Department of Neonatology, Kameda Medical Center, Kamogawa, Japan;6. Department of Pediatrics, Anjo Kosei Hospital, Anjo, Japan;7. Department of Pediatrics, Yokkaichi Municipal Hospital, Yokkaichi, Japan;8. Department of Pediatrics and Perinatology, Tottori University Faculty of Medicine, Tottori, Japan;9. Department of Pediatrics and Child Health, Nihon University School of Medicine, Tokyo, Japan;10. Department of Pediatrics, Surugadai Nihon University Hospital, Tokyo, Japan;11. Department of Internal Medicine, Kawanishi City Hospital, Kawanishi, Japan |