[1] Nagoya Univ, Grad Sch Med, Dept Resp Med, Nagoya, Aichi 4648601, Japan
[2] Tosei Gen Hosp, Dept Resp Med & Allergy, Seto, Aichi, Japan
[3] Ogaki Municipal Hosp, Dept Resp Med, Gifu, Japan
[4] Komaki Municipal Hosp, Dept Resp Med, Gifu, Japan
[5] Toyota Kosei Hosp, Dept Resp Med & Allergy, Toyota, Japan
[6] Toyohashi Municipal Hosp, Dept Resp Med, Toyohashi, Aichi, Japan
[7] Japanese Red Cross Nagoya Daini Hosp, Dept Resp Med, Nagoya, Aichi, Japan
[8] Konan Kosei Hosp, Dept Resp Med, Konan, Aichi, Japan
[9] Nagoya Univ Hosp, Ctr Adv Med & Clin Res, Nagoya, Aichi, Japan
[10] Aichi Hosp, Aichi Canc Ctr, Dept Resp Med, Nagoya, Aichi, Japan