[1] Kawasaki Med Sch Hosp, Dept Pathol, Kurashiki, Okayama 7010192, Japan
[2] Univ Tokushima, Sch Med, Dept Pathol, Tokushima 7708503, Japan
[3] Shiga Univ Med Sci, Dept Pathol 1, Otsu, Shiga 5202192, Japan
[4] Kawasaki Hosp, Dept Pathol, Okayama, Japan
[5] Kawasaki Med Sch, Dept Pathol, Kurashiki, Okayama 7010192, Japan