[1] Kurume Univ, Sch Med, Dept Med 2, Kurume, Fukuoka 830, Japan
[2] Kurume Univ, Sch Med, Res Ctr Innovat Canc Therapy, Kurume, Fukuoka 830, Japan
[3] Kurume Univ, Int Inst Liver Res, Kurume, Fukuoka 830, Japan
[4] Gunma Univ, Sch Med, Dept Orthoped Surg, Maebashi, Gumma 371, Japan