[1] Miyagi Canc Ctr, Dept Resp Med, Natori, Miyagi, Japan
[2] Tohoku Univ, Sch Med, Dept Palliat Med, Sendai, Miyagi, Japan
[3] Kyoto Univ, Dept Biomed Stat & Bioinformat, Grad Sch Med, Kyoto, Japan
[4] Sendai Kousei Hosp, Dept Pulm Med, Sendai, Miyagi, Japan
[5] Komagome Hosp, Dept Thorac Oncol & Resp Med, Tokyo Metropolitan Canc & Infect Dis Ctr, Tokyo, Japan
[6] Kanagawa Cardiovasc & Resp Ctr, Div Resp Med, Yokohama, Kanagawa, Japan
[7] Nippon Med Sch, Dept Pulm Med & Oncol, Tokyo, Japan
[8] Juntendo Univ, Fac Med, Tokyo, Japan
[9] Juntendo Univ, Grad Sch Med, Tokyo, Japan
[10] Asahikawa Med Ctr, Asahikawa, Hokkaido, Japan
[11] Jcho Hokkaido Hosp, Sapporo, Hokkaido, Japan
[12] Gunma Prefectural Canc Ctr, Gunma, Japan
[13] Obihiro Kosei Gen Hosp, Dept Med 1, Obihiro, Hokkaido, Japan
[14] Saitama Med Univ, Hidaka, Japan
[15] Tohoku Univ, Sendai, Miyagi, Japan