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| Exploration of the Relationship between the Expression of Levels of Eosinophils in Sputum and Serum and the Condition and Prognosis of COPD Patients |
| LIU Lirong, HU Jiayuan |
| First-author's address: Department of Respiratory and Critical Care Medicine, Ruijin People's Hospital, Ruijin 342500, China |
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Received: 02 November 2023
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