1. Department of Bio-function Science, Graduate School of Pharmaceutical Sciences, Kyushu University, Kyushu, Japan.
2. Research & Development Division, Mitsubishi Pharma Corporation, Japan.
3. Division of Experimental Chemotherapy, Japanese Foundation for Cancer Research, Tokyo, Japan.
4. Department of Anatomic Pathology, Graduate School of Medical Sciences, Kyushu University, Kyushu, Japan.