[1] Kinki Univ, Grad Sch, Sch Sci & Engn, Higashiosaka, Osaka, Japan
[2] Kyoto Univ, Grad Sch Informat, Kyoto, Japan
[3] Kyoto Univ, Grad Sch Med, Kyoto, Japan
[4] Kyoto Univ Hosp, Dept Nursing, Kyoto, Japan
[5] Kyoto Univ Hosp, Div Med Informat Technol & Adm Planning, Shogo In Kawahara Cho 54, Kyoto, Japan