1. Department of Orthopedic Surgery, Kyushu Rosai Hospital, Kitakyushu, Fukuoka, Japan
2. Department of Orthopedic Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
3. Department of Thoracic Surgery, Obase Hospital, Kanda, Fukuoka, Japan
4. Department of Surgery, Kyushu Rosai Hospital, Kitakyushu, Fukuoka, Japan