1. Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8640, Japan
2. Department of Orthopedics and Joint Reconstruction, Taipei Veterans General Hospital, Taipei 112, Taiwan
3. Orthopedic Department of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
4. Therapeutical and Research Center of Musculoskeletal Tumor, Taipei Veterans General Hospital, Taipei 112, Taiwan