[1] Yuri Kumiai Gen Hosp, Dept Internal Med, Akita 0158511, Japan
[2] Aiba Shoten Incorp, Dept Treatment Home, Akita 0110911, Japan
[3] Yuri Kumiai Gen Hosp, Dept Nursing, Akita 0158511, Japan
[4] Yuri Kumiai Gen Hosp, Dept Neurosurg & Hlth, Akita 0158511, Japan