1. Tokyo Metropolitan Hiroo School of Nursing Tokyo Japan
2. Division of Dysphagia Rehabilitation Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
3. Oral Rehabilitation Niigata University Medical and Dental Hospital Niigata Japan
4. Department of Obstetrics and Gynecology Tokyo Dental College Ichikawa General Hospital Chiba Japan
5. Nakayama Dental Clinic Tokyo Japan
6. Division of Oral Science for Health Promotion, Faculty of Dentistry & Graduate School of Medical and Dental Science Niigata University Niigata Japan
7. Department of Dental Hygiene Tokyo Dental Junior College Tokyo Japan
8. Department of Oral Pathological Science and Surgery Tokyo Dental College Tokyo Japan
9. Department of Oral Oncology Oral and Maxillofacial Surgery, Tokyo Dental College Ichikawa General Hospital Chiba Japan