1. Department of Breast Surgery, JA Hiroshima General Hospital, Hatsukaichi, Hiroshima 738‑8503, Japan
2. Section of Pathological Research and Laboratory, JA Hiroshima General Hospital, Hatsukaichi, Hiroshima 738‑8503, Japan
3. Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Hiroshima 734‑8553, Japan