Kazuki Takada, MD, PhD, Department of Surgery, Saiseikai Fukuoka General Hospital, Fukuoka, Japan; Shinkichi Takamori, MD, PhD, Department of Thoracic Oncology, National Hospital Organization Kyushu Cancer Center, Fukuoka, Japan; Naoko Miura, MD, PhD, and Yasunori Shikada, MD, PhD, Department of Surgery, Saiseikai Fukuoka General Hospital, Fukuoka, Japan; and Mototsugu Shimokawa, PhD, Department of Biostatistics, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan (2021-12-10時点)