[1] Shinshu Univ, Sch Med, Dept Internal Med 1, Matsumoto, Nagano, Japan
[2] Univ Toyama, Hlth Adm Ctr, Toyama, Japan
[3] Kanagawa Cardiovasc & Resp Ctr, Div Resp Med, Yokohama, Kanagawa, Japan
[4] Toranomon Gen Hosp, Resp Ctr, Dept Resp Med, Tokyo, Japan
[5] Kyoto Univ, Grad Sch Med, Dept Adv Med Resp Failure, Kyoto, Japan
[6] Kobe City Med Ctr Gen Hosp, Dept Resp Med, Kobe, Hyogo, Japan
[7] Univ Fukui, Fac Med Sci, Dept Internal Med 3, Fukui, Japan
[8] Jichi Med Univ, Dept Med, Div Pulm Med, Shimono, Japan
[9] Kyorin Univ, Dept Resp Med, Sch Med, Tokyo, Japan
[10] Tokyo Med & Dent Univ, Dept Resp Med, Tokyo, Japan
[11] Kanagawa Cardiovasc & Resp Ctr, Dept Radiol, Yokohama, Kanagawa, Japan
[12] Kansai Rosai Hosp, Dept Radiol, Amagasaki, Hyogo, Japan
[13] Kyoto Univ Hosp, Dept Diagnost Pathol, Kyoto, Japan
[14] Nippon Med Sch, Dept Analyt Human Pathol, Tokyo, Japan
[15] Asahi Cent Hosp, Div Pathol, Asahi, Japan
[16] Kanagawa Cardiovasc & Resp Ctr, Dept Pathol, Yokohama, Kanagawa, Japan
[17] Saitama Cardiovasc & Resp Ctr, Div Diagnost Pathol, Kumagaya, Saitama, Japan