title: Etiology and clinical signs of serious infections in young infants in developing countries: a WHO collaborative study.
mesh_terms: D003906:Developing Countries; D014943:Global Health; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007239:Infections / Q000175:diagnosis / Q000453:epidemiology / Q000382:microbiology / Q000821:virology; D008581:Meningitis / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D011014:Pneumonia / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D018805:Sepsis / Q000175:diagnosis / Q000453:epidemiology / Q000209:etiology; D014944:World Health Organization