1. Department of Pathology; Kurume University School of Medicine; Kurume Fukuoka Japan
2. Department of Pathology, State Key Laboratory of Cancer Biology; Xijing Hospital, Fourth Military Medical University; Xi'an Shaanxi China
3. Department of Pediatrics; Graduate School of Medical Sciences, Kyushu University; Kurume Fukuoka Japan
4. Department of Pathology; Nagasaki University, School of Medicine; Nagasaki Japan