[1] China Med Univ Hosp, Dept Pulm Med, Taichung, Taiwan
[2] Taichung Vet Gen Hosp, Dept Pulm Med, Taichung, Taiwan
[3] Vet Gen Hosp, Chest Dept, Taipei, Taiwan
[4] Chang Guang Mem Hosp, Dept Pulm & Crit Care Med, Kaohsiung, Taiwan
[5] Natl Cheng Kung Univ Hosp, Tainan 70428, Taiwan
[6] Roche Prod Ltd, Dept Pharma, Taipei, Taiwan