1. Division of Clinical Oral Rehabilitation; The Nippon Dental University Graduate School of Life Dentistry at Tokyo; Japan
2. Division of Rehabilitation for Speech and Swallowing Disorders; Nippon Dental University Tama Oral Rehabilitation Clinic; Japan
3. Dental Department; Hiroshima City General Rehabilitation Center; Hiroshima Japan
4. Department of Microbiology; The Nippon Dental University School of Life Dentistry at Tokyo; Japan
5. Incubation Center; Panasonic Healthcare Co., Ltd.; Tokyo Japan