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机构:
Natl Med Ctr, Dept Internal Med, Div Pulm & Crit Care Med, Seoul, South Korea
Hallym Univ, Dongtan Sacred Heart Hosp, Coll Med, Dept Pulmonol & Allergy, Hwaseong, South Korea
Natl Med Ctr, Dept Internal Med, Div Pulm & Crit Care Med, 245 Eulji Ro, Seoul, South Korea Natl Med Ctr, Dept Internal Med, Div Pulm & Crit Care Med, Seoul, South Korea