1. Department of Breast Surgery, National Hospital Organization, Fukuyama Medical Center, Hiroshima, Japan
2. Department of Surgery, National Hospital Organization, Fukuyama Medical Center, Hiroshima, Japan
3. Department of Laboratory of Pathology, National Hospital Organization, Fukuyama Medical Center, Hiroshima, Japan
4. Department of Pathology and Laboratory Medicine, Kanazawa Medical University, Ishikawa, Japan