Role of systemic corticosteroids (CS) ¡n treatment of chronic obstructive pulmonary diseases (COPD) is quite controversial. Considering side effects of systemic CS, their efficacy should be clearly documented with objective criteria before their chronic utilization. In our study, 25 grade II (n=20, FEV1 between 49 and 35%) and grade III (n=5, FEV1
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