Analysis of etiological characteristics and risk factors in elderly patients with comorbidities and severe pneumonia
YE Dan-ru, SONG Li, LIN Min, HE Jing-jing, CHEN Xiu-fang, YE Kai-li
CHINESE JOURNAL OF DISINFECTION . 2026, (7): 506 -510 .  DOI: 10.11726/j.issn.1001-7658.2026.07.007

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