*Yu Yoshizumi^1,2,5, Minoru Ikuta¹, Hikari Kosaka^1,3, Shuhei Fukuda¹, Mieko Nakada⁴, Shiori Nakajima⁴, Minami Nobusue⁴, Hitoshi Mukouyama⁵, Haruka Tohara² (1. Department of Oral Surgery, Saitama Red Cross Hospital, 2. Department of Dysphagia Rehabilitation, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 3. Department of Oral and Maxillofacial Surgical Oncology, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 4. Department of Nurse, Saitama Red Cross Hospital, 5. Department of Dental and Oral Surgery, Yokohama City Minato Red Cross Hospital)

*Junji Genda¹, Sho Horie¹, Tomo Nakatsumi¹, Tetsutaro Yahata¹ (1. Kanazawa Univ.)

*Junki Ono¹, Sumie Takashima¹, Shuntaro Soejima¹, Yoshihiko Kumai¹ (1. Nagasaki University Hospital)

*Yuto Ochiai^1,2, Satomi Kawata¹, Yuta Nakajima¹, Kouta Nagoya³, Wakana Onuki¹, Makoto Inoue¹ (1. Division of Dysphagia Rehabilitation, Niigata University Graduate School of Medical and Dental Sciences, 2. Division of Speech, Language, and Hearing Sciences Faculty of Rehabilitation Niigata University of Health and Welfare, 3. Showa University School of Dentistry, Department of Oral Health Management, Division of Oral Functional Rehabilitation Medicine)

*Seiko Hongama¹, Saki Takeda¹, Sayaka Kojima¹, Tomoko Adachi¹, Satoshishi Hino¹ (1. Dentistry, Oral surgery and Orthodontics, Ehime University Hospital )

*Ryota Hidaka¹, hirona tabata¹ (1. Rehabilitation Department, Saiseikai Kumamoto Hospital)

*Chisto Sugiyama¹ (1. Chibaken Saiseikai Narashino Hospital)

*e.g asako e.g shibata¹, e.g hiroe e.g horie² (1. Fuchu Hospital, 2. Berland General Hospital)

*Chihiro Kato¹, Tomoko Sugimoto¹ (1. Tokyo Metropolitan Bokutoh Hospital)

*toshinaga tanaka¹ (1. Otagawa Hospital)

*Masumi Mori¹, Takashi Sasaki¹, Takahumi Matsumoto¹, Yasuhiro Shimizu¹ (1. Hananooka hospital)

*Aya Oda¹, Kentaro Nakao¹, Umi Oda^1,2, Hideki Ishigaki¹, Koichiro Nishiyama^3,2,1 (1. Department of Rehabilitation Medicine, IMS Yokohama Higashi-Totsuka General Rehabilitation Hospital, 2. Yokohama Swallowing Research Group, 3. Nishiyama Otorhinolaryngology Clinic)