[1] Kyushu Univ, Grad Sch Med Sci, Dept Nursing, Fukuoka, Japan
[2] Kyushu Univ, Grad Sch Med Sci, Dept Hematol, Harasanshin Hosp, Fukuoka, Japan
[3] Kyushu Univ, Grad Sch Med Sci, Dept Med & Biosyst Sci, Fukuoka, Japan
[4] Int Univ Hlth & Welf, Grad Sch Hlth & Welf Sci, Fukuoka, Japan