[1] Natl Canc Ctr Hosp East, Kashiwa, Chiba, Japan
[2] Omagari Kosei Med Ctr, Dept Thorac Surg, Akita, Japan
[3] Okayama Univ Hosp, Okayama, Japan
[4] Japanese Red Cross Ise Hosp, Ise, Japan
[5] Chiba Canc Ctr, Chiba, Japan
[6] Sendai Kousei Hosp, Sendai, Miyagi, Japan
[7] Natl Hosp Org, Dept Thorac Oncol, Kyushu Canc Ctr, Fukuoka, Japan
[8] Natl Hosp Org, Dept Thorac Oncol, Osaka Toneyama Med Ctr, Osaka, Japan
[9] Toyama Prefectural Cent Hosp, Toyama, Japan
[10] Natl Canc Ctr, Tokyo, Japan
[11] Tottori Univ Hosp, Yonago, Tottori, Japan
[12] Kanagawa Canc Ctr, Dept Thorac Oncol, Yokohama, Kanagawa, Japan