[1] Tosei Gen Hosp, Dept Resp Med & Allergy, Seto, Japan
[2] Kobe City Med Ctr Gen Hosp, Dept Resp Med, Kobe, Hyogo, Japan
[3] Japanese Fdn Canc Res, Canc Inst Hosp, Thorac Med oncol, Tokyo, Japan
[4] St Luke Int Hosp, Thorac Ctr, Dept Pulm Med, Chuo City, Japan
[5] Tosei Gen Hosp, Resp & Allerg Med, Seto, Aichi 4898642, Japan
[6] Kobe City Med Ctr Gen Hosp, Resp Med, Kobe, Hyogo, Japan