[1] Kanazawa Univ, Sch Med, Resp Med, Kanazawa, Ishikawa 9208641, Japan
[2] Univ Toyama, Hlth Adm Ctr, Toyama 9300194, Japan
[3] Shinshu Univ, Sch Med, Resp Med, Matsumoto, Nagano 3908621, Japan
[4] Kanagawa Cardiovasc & Resp Ctr, Resp Med, Yokohama, Kanagawa 2360051, Japan
[5] Natl Hosp Org Tokyo Hosp, Clin Lab, Kiyose, Tokyo 2048585, Japan
[6] Saitama Med Univ, Int Med Ctr, Radiol, Saitama 3501298, Japan
[7] Nippon Med Sch, Analyt Human Pathol, Bunkyo Ku, Tokyo 1138603, Japan
[8] St Marianna Univ, Sch Med, Radiol, Kawasaki, Kanagawa 2168511, Japan
[9] Hamamatsu Univ Sch Med, Resp Med, Hamamatsu, Shizuoka 4313192, Japan
[10] NHO Ibarakihigashi Natl Hosp, Resp Med, Ibaraki 3191113, Japan
[11] Dokkyo Med Univ, Resp Med, Shimotsugagun, Tochigi 3210293, Japan
[12] NHO Okinawa Hospiral, Resp Med, Minowan, Okinawa 9012214, Japan
[13] Fukui Saiseikai Hosp, Resp Med, Fukui 9188503, Japan
[14] Hamamatsu Rosai Hosp, Resp Med, Hamamatsu, Shizuoka 4308525, Japan
[15] Nagasaki Univ Hosp, Resp Med, Nagasaki 8528501, Japan
[16] Nippon Med Sch, Resp Med, Bunkyo Ku, Tokyo 1138603, Japan
[17] Showa Univ, Fujigaoka Hosp, Resp Med, Yokohama, Kanagawa 2278501, Japan
[18] NHO Yamaguchi Ube Med Ctr, Resp Med, Ube, Yamaguchi 7550241, Japan
[19] Juntendo Univ, Sch Med, Resp Med, Bunkyo Ku, Tokyo 1138431, Japan
[20] Seirei Yokohama Hosp, Resp Med, Yokohama, Kanagawa 2408521, Japan