[1] St Marianna Univ, Div Resp Med, Dept Internal Med, Sch Med, Kawasaki, Kanagawa, Japan
[2] Miyagi Canc Ctr, Dept Resp Med, Natori, Miyagi, Japan
[3] Kanagawa Canc Ctr, Dept Thorac Oncol, Yokohama, Kanagawa, Japan
[4] Sendai Kousei Hosp, Dept Pulm Med, Sendai, Miyagi, Japan
[5] Chiba Univ Hosp, Dept Med Oncol, Chiba, Japan
[6] Ishikawa Prefectural Cent Hosp, Dept Gen Thorac Surg, Kanazawa, Ishikawa, Japan
[7] Saitama Med Univ, Int Med Ctr, Dept Resp Med, Hidaka, Japan
[8] Hiroshima Univ, Dept Surg Oncol, Hiroshima, Japan
[9] JATA, Fukujuji Hosp, Ctr Clin Canc, Tokyo, Japan
[10] Saiseikai Utsunomiya Hosp, Div Pulm, Internal Med, Utsunomiya, Tochigi, Japan
[11] Nippon Med Sch, Dept Pulm Med & Oncol, Tokyo, Japan
[12] Kurume Univ Sch Med, Div Respirol Neurol & Rheumatol, Dept Internal Med, Kurume, Fukuoka, Japan
[13] Jichi Med Univ, Div Pulm Med, Dept Internal Med, Shimotsuke, Tochigi, Japan
[14] Tohoku Univ, Dept Resp Med, Sendai, Miyagi, Japan
[15] Kyoto Univ, Grad Sch Med, Dept Biomed Stat & Bioinformat, Kyoto, Japan
[16] Iwate Med Univ, Morioka, Iwate, Japan