1) Department of Thoracic Surgery, University of Tsukuba, Tsukuba, Japan
2) Department of Thoracic Surgery, Jichi Medical University, Shimono, Japan
3) Department of Thoracic Surgery, Tohoku University, Sendai, Japan
4) Department of Thoracic Surgery, Kyorin University, Mitaka, Japan
5) Department of Thoracic Surgery, Osaka University, Suita, Japan
6) Department of Thoracic Surgery, Okayama University, Okayama, Japan
7) Department of Thoracic Surgery, Tottori University, Yonago, Japan
8) Department of Thoracic Surgery, Fujita Health University, Toyoake, Japan
9) Department of Thoracic Surgery, Nagoya University, Nagoya, Japan
10) Department of Thoracic Surgery, Chiba University, Chiba, Japan
11) Department of Thoracic Surgery, Dokkyo Medical University, Shimotsuga, Japan

Yukio Sato¹⁾, Shunsuke Endo²⁾, Yoshinori Okada³⁾, Haruhiko Kondo⁴⁾, Yasushi Shintani⁵⁾, Shinichi Toyooka⁶⁾, Hiroshige Nakamura⁷⁾, Yasushi Hoshikawa⁸⁾, Toyofumi Yoshikawa⁹⁾, Ichiro Yoshino¹⁰⁾, Masayuki Chida¹¹⁾