1. Department of Breast Oncology, Saitama Medical University International Medical Center, Hidaka, Saitama 350‑1298, Japan
2. Department of Palliative Medicine, Saitama Medical University International Medical Center, Hidaka, Saitama 350‑1298, Japan
3. Department of Orthopaedic Oncology and Surgery, Saitama Medical University International Medical Center, Hidaka, Saitama 350‑1298, Japan
4. Department of Orthopedic Surgery, Saitama Medical University Hospital, Hidaka, Saitama 350‑0495, Japan