1. Department of General Thoracic Surgery, Shonan Kamakura General Hospital, 1370-1, Okamoto, Kamakura 247-8533, Kanagawa, Japan
2. Department of Respiratory Medicine, Saiseikai Yokohamashi Nanbu Hospital, 3-2-10, Konandai, Konan-ku, Yokohama 234-0054, Kanagawa, Japan
3. Department of Respiratory Medicine, Shonan Fujisawa Tokushukai Hospital, 1-5-1, Tsujidokandai, Fujisawa 251-0041, Kanagawa, Japan
4. Department of Pathology, Shonan Kamakura General Hospital, 1370-1, Okamoto, Kamakura 247-8533, Kanagawa, Japan
5. Center for Clinical and Translational Science, Shonan Kamakura General Hospital, 1370-1, Okamoto, Kamakura 247-8533, Kanagawa, Japan
6. Center for Clinical Research, Shonan Kamakura General Hospital, 1370-1, Okamoto, Kamakura 247-8533, Kanagawa, Japan
7. Clinical Research Center, Shonan Fujisawa Tokushukai Hospital, 1-5-1, Tsujidokandai, Fujisawa 251-0041, Kanagawa, Japan
8. Department of Surgery, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-0003, Japan