Old Friends, Old Wine, and Old COPD Classification Are Best

Rhee, CK

Rhee, CK (reprint author), Catholic Univ Korea, Div Pulm Allergy & Crit Care Med, Dept Internal Med, Seoul St Marys Hosp,Coll Med, 222 Banpo Daero, Seoul 06591, South Korea.

TUBERCULOSIS AND RESPIRATORY DISEASES, 2018; 81 (4): 347