[1] Kurume Univ, Dept Pediat Surg, Sch Med, 67 Asahi Machi, Kurume, Fukuoka 8300011, Japan
[2] Kurume Univ Hosp, Div Med Safety Management, Kurume, Fukuoka, Japan
[3] Kurume Univ Hosp, Multidisciplinary Canc Treatment Ctr, Kurume, Fukuoka, Japan
[4] Kurume Univ Hosp, Dept Diagnost Pathol, Kurume, Fukuoka, Japan