1. Graduate School of Education, The University of Tokyo, Tokyo, Japan
2. Department of Oral Physiology, Osaka University Graduate School of Dentistry, Osaka, Japan
3. Department of Fixed Prosthodontics, Osaka University Graduate School of Dentistry, Osaka, Japan
4. Department of Prosthodontics, Gerodontology and Oral Rehabilitation, Osaka University Graduate School of Dentistry, Osaka, Japan
5. Department of Orthodontics and Dentofacial Orthopedics, Osaka University Graduate School of Dentistry, Osaka, Japan
6. Department of Child Development, Osaka University United Graduate School of Child Development, Suita, Osaka, Japan
7. Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
8. Sleep Medicine Center, Osaka University Hospital, Osaka, Japan