1. Department of Orthopedic Surgery, Okayama University Hospital, Okayama 700‑8558, Japan
2. Department of Orthopedic Surgery, Shikoku Cancer Center, Matsuyama, Ehime 791‑0280, Japan
3. Department of Radiology, Shikoku Cancer Center, Matsuyama, Ehime 791‑0280, Japan
4. Department of Thoracic Oncology and Medicine, Shikoku Cancer Center, Matsuyama, Ehime 791‑0280, Japan