[1] Kyoto Prefectural Univ Med, Dept Pulm Med, Kyoto, Japan
[2] Fukuchiyama City Hosp, Dept Med Oncol, Fukuchiyama, Japan
[3] Uji Tokushukai Med Ctr, Dept Resp Med, Uji, Japan
[4] Kyoto First Red Cross Hosp Kyoto Daiichi Sekijyuj, Oncol, Kyoto, Japan
[5] Saiseikai Suita Hosp, Dept Resp Med, Suita, Osaka, Japan
[6] Matsushita Mem Hosp, Dept Resp Med, Moriguchi, Osaka, Japan
[7] Otsu City Hosp, Dept Resp Med, Otsu, Shiga, Japan