1. Department of Oral and Maxillofacial Surgery, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan.
2. Department of Neonatal Medicine, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan.
3. Department of Pediatrics, Division of Developmental Pediatrics, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan.
4. Department of Pediatrics, Division of Pediatric Neurology, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Osaka, Japan.