Expression of Matrix Metalloproteinase-2, Matrix Metalloproteinase-9, Tissue Inhibitor of Metalloproteinase-1, and Changes in Alveolar Septa in Patients with Chronic Obstructive Pulmonary Disease

18 October 2020: Clinical Research

Yongxiang Zhang ^ABCDE , Yuechuan Li ^AEFG* , Zhen Ye ^BD , Hui Ma ^CF

DOI: 10.12659/MSM.925278

Med Sci Monit 2020; 26:e925278

Figure 1 Flow diagram of patient enrollment.