1. Centre for Developmental and Cognitive Neuroscience, Department of Paediatrics and Child Health, Kurume University School of Medicine, 67 Asahimachi, Kurume, Fukuoka 830-0011, Japan.
2. Iwate Prefectural Takata Hospital, Rikuzen-Takata, Japan.
3. Iwate Prefectural Ofunato Hospital, Ofunato, Japan.
4. St Mary’s Hospital, Kurume, Japan.
5. Department of Paediatrics, Iwate Medical University, Morioka, Japan.
6. Department of International Collaboration, Osaka University, Osaka, Japan.
7. Health Service Bureau, Rikuzen-Takata, Japan.