1. Department of Radiation Oncology, Seirei Mikatahara General Hospital, Shizuoka, Japan;
2. Division of Radiation Oncology, Kobe University Graduate School of Medicine, Hyogo, Japan;
3. Department of Radiation Oncology, Kobe Minimum Invasive Cancer Medical Center, Hyogo, Japan;
4. Division of Thoracic Surgery, Respiratory Disease Center, Seirei Mikatahara General Hospital, Shizuoka, Japan;
5. Department of Respiratory Medicine, Respiratory Disease Center, Seirei Mikatahara General Hospital, Shizuoka, Japan