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[5]
Sputum matrix metalloproteinase-9, tissue inhibitor of metalloprotinease-1, and their molar ratio in patients with chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis and healthy subjects[J] . K.M. BEEH,J. BEIER,O. KORNMANN,R. BUHL.Respiratory Medicine . 2003 (6)