Affiliation: | 1. Department of General Pediatrics, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan;2. Department of Pediatric Emergency Medicine, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan;3. Department of Neonatology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan;4. Clinical Research Support Center, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan;5. Department of Cardiology, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan |