1 Department of Internal Medicine, Division of Respiratory Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan.
2 Department of Internal Medicine, Division of Respiratory Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe, Hyogo, 650-0017, Japan. tnagano@med.kobe-u.ac.jp.
3 Graduate School of System Informatics, Kobe University, 1-1-Rokkodai-cho, Nada-ku, Kobe, Hyogo, 657-8501, Japan.
4 Department of Respiratory Medicine, Iizuka Hospital, 3-83 Yoshiomachi, Iizuka, Fukuoka, 820-0018, Japan.
5 Department of Respiratory Medicine, Kasai City Hospital, 1-13 Yoko, Hojo-cho, Kasai, Hyogo, 675-2311, Japan.
6 Department of Respiratory Medicine, Akashi Medical Center, 743-33 Yagi, Okubo-cho, Akashi, Hyogo, 674-0063, Japan.
7 Department of Respiratory Medicine, Kakogawa Central City Hospital, 439 Honmachi, Kakogawa-cho, Kakogawa, Hyogo, 675-8611, Japan.
8 Department of Respiratory Medicine, Kitaharima Medical Center, 926-250 Ichiba-cho, Ono, Hyogo, 675-1392, Japan.
9 Department of Respiratory Disease, Takatsuki General Hospital, 1-3-13 Kosobe-cho, Takatsuki, Osaka, 569-1192, Japan.