[1] Kansai Med Univ Hosp, Osaka, Japan
[2] Kindai Univ, Fac Med, Dept Med Oncol, Sayama, Osaka, Japan
[3] Hyogo Canc Ctr, Dept Thorac Oncol, Akashi, Hyogo, Japan
[4] Natl Kyushu Canc Ctr, Dept Thorac Oncol, Fukuoka, Fukuoka, Japan
[5] MSD KK, Tokyo, Japan
[6] Natl Hosp Org Shikoku Canc Ctr, Dept Thorac Oncol, Matsuyama, Ehime, Japan