GOLD B COPD patients: are they all the same?-MedSci.cn

GOLD B COPD patients: are they all the same?

Costa, JC; Machado, JN; Gomes, LMVMS; Rodrigues, CMR

Costa, JC (corresponding author), Univ Hosp Ctr Coimbra, Hosp Geral, Pneumol Unit, Coimbra, Portugal.