1. Department of Public Health Graduate School of Health SciencesKobe University Kobe Japan
2. Japan Society for the Promotion of Science Chiyoda Japan
3. Division of Rehabilitation Medicine Kobe University Hospital Kobe Japan
4. Department of Preventive Medicine and Epidemiology National Cerebral and Cardiovascular Center Research Institute Osaka Japan
5. Division of Rehabilitation Medicine Kobe Mariners Hospital Kobe Japan
6. Takumi day‐care facility in children Nishinomiya Japan