Comparison of CRP, Procalcitonin, Neutrophil Counts, Eosinophil Counts, sTREM-1, and OPN between Pneumonic and Nonpneumonic Exacerbations in COPD Patients.

"Disclosure A preprint has previously been published in Authorea based on the link :https://www.authorea.com/users/367858/articles/487129-comparison-of-crp-procalcitonin-neutrophil-counts-strem-1-opn-clinical-status-and-short-term-outcomes-between-pneumonic-and-non-pneumonic-exacerbations-in-copd-patients. Conflicts of Interest The authors declare that they have no conflicts of interest."

"The authors would like to express appreciation for the assistance of the staff at the respiratory department at the Second Clinical Hospital of Chongqing Medical University and the People's Hospital of Nanchuan, Chongqing. This work was supported by the National Natural Science Foundation of China (Grant No. 81650003) and the Health and Family Planning Commission of Chongqing City (Grant No. 2016HBRC004)."