[1] Kyushu Univ, Dept Med & Clin Sci, Grad Sch Med Sci, Fukuoka 812, Japan
[2] Univ Cambridge, Div Mol Histopathol, Dept Pathol, Cambridge, England
[3] Kyushu Univ, Dept Anat Pathol, Grad Sch Med Sci, Fukuoka 812, Japan
[4] Kyushu Cent Hosp, Dept Internal Med, Fukuoka, Japan