[Incidence survey and risk factor analysis of nosocomial infections].
D002681:China; D003428:Cross Infection / Q000453:epidemiology* / Q000382:microbiology; D005260:Female; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000453:epidemiology; D011550:Pseudomonas aeruginosa; D012044:Regression Analysis; D012307:Risk Factors