1. Department of Pathology; Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital; Tokyo Japan
2. Department of Molecular Pathology; Yokohama City University School of Medicine; Yokohama Japan
3. Department of Pathology and Clinical Laboratories; National Cancer Center Central Hospital; Tokyo Japan
4. Rare Cancer Center; National Cancer Center Hospital; Tokyo Japan
5. Department of Orthopaedic Surgery and Musculoskeletal Oncology; Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital; Tokyo Japan
6. Department of Musculoskeletal Oncology; National Cancer Center Central Hospital; Tokyo Japan