22 October 2020 : Clinical Research
Serum Levels of Gamma-Glutamyltransferase During Stable and Acute Exacerbations of Chronic Obstructive Pulmonary Disease
Desheng Sun12ABCEG*, Hongyan Liu3DF, Yao Ouyang1B, Xiansheng Liu2G, Yongjian Xu2CDOI: 10.12659/MSM.927771
Med Sci Monit 2020; 26:e927771
Figure 1 Participant recruitment and follow-up flow chart.






