Clinical Case Study: Hemophagocytic Lymphohistiocytosis Induced by Escherichia coli Invasion of Bone Marrow in a Seronegative Rheumatoid Arthritis Patient Undergoing Low-Dose Methotrexate Therapy
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By
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Ziping Liu
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Fengjian Li
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Yunhong Liu
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Xueyan Chen
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July 13, 2026