LIU Benhong, ZHOU Ning, SUN Mingxiang, YU Jia, GAO Songfeng. The effect of inhaled glucocorticoid therapy on levels of cytokines in serum and sputum of patients with acute exacerbation of the chronic obstructive pulmonary diseaseJ. Journal of Clinical Medicine in Practice, 2016, (11): 32-34,46. DOI: 10.7619/jcmp.201611010