1. Department of Surgery, Kyushu University Beppu Hospital, Beppu, Oita 874‑0838, Japan
2. Fujiyoshi Breast Clinic, Beppu, Oita 874‑0836, Japan
3. Tanaka Breast, Surgery, Internal Medicine Clinic, Beppu, Oita 874‑0936, Japan
4. Department of Digestive Surgery, Breast and Thyroid Surgery, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Kagoshima 890‑8520, Japan