[A retrospective cohort study of the influence of time of hospital-acquired pneumonia onset on pathogen constitution].


OBJECTIVE To study the influence of duration of hospitalization on etiologic agent and antibiotic-resistance of hospital-acquired pneumonia (HAP). METHODS Cases of HAP were patients hospitalized in Fudan University Zhongshan Hospital, Ruijin Hospital, Beijing Hospital, Zhongshan University Affiliated Third Hospital, Guangzhou Medical College Affiliated… (More)


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