WANG Jianjun, YU Yanli, REN Chaojie, SHI Xiaoxia, LU Yan, HOU Yuanyuan. Value of combined detection of serum PCT, IL-17 and endotoxin in the diagnosis of elderly patients with respiratory tract bacterial infection[J]. Journal of Clinical Medicine in Practice, 2018, (15): 33-36. DOI: 10.7619/jcmp.201815008