University of Tsukuba - Department of Thoracic Surgery, University of Tokyo, Tokyo Medical University, Japan Cancer Society, Jichi Medical University, Tohoku University, Kyorin University, The University of Osaka - Graduate School of Medicine, Okayama University - Okayama University Hospital, Tottori University, Fujita Health University, Nagoya University, Chiba University, Japan Cancer Society and Dokkyo Medical University