1. Yuji Inagaki, MD; Kouji Azuma, MD; Yukihiro Nakamura, MD; and Shunichi Kouno, MD, Department of Internal Medicine, National Hospital Organization, Kinki-Chuo Chest Medical Center, Sakai, Osaka, Japan; Yoshinobu Matsuda, MD, Department of Psychosomatic Internal Medicine, National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai, Osaka, Japan; and Shinji Atagi, MD, Clinical Research Center, National Hospital Organization Kinki-Chuo Chest Medical Center, Sakai, Osaka, Japan