1. Centre for Developmental and Cognitive NeuroscienceDepartment of Paediatrics and Child HealthKurume University School of MedicineKurumeFukuokaJapan
2. Division of NeonatologyNagano Children's HospitalNaganoJapan
3. Department of Medical Physics and Bio‐EngineeringUniversity College LondonUnited Kingdom
4. Yanagawa Institute for Developmental DisabilitiesInternational University of Health and WelfareFukuokaJapan