[1] Tamana Reg Hlth Med Ctr, Dept Nutr & Dysphagia Rehabil, 2172 Tamana, Tamana City, Kumamoto 8650005, Japan
[2] Yokohama City Univ, Med Ctr, Dept Rehabil Med, Yokohama, Kanagawa, Japan
[3] Minamisoma Municipal Gen Hosp, Dept Neurosurg, Fukushima, Japan