1. Department of Medical Oncology/Hematology, Kobe University Hospital, Kobe, Hyogo 650‑0017, Japan
2. Department of Diagnostic Pathology, Kobe University Hospital, Kobe, Hyogo 650‑0017, Japan
3. Department of Orthopaedic Surgery, Kobe University Hospital, Kobe, Hyogo 650‑0017, Japan