[Pneumonia caused by gram negative pathogens].
D002675:Child, Preschool; D006088:Gram-Negative Aerobic Bacteria / Q000302:isolation & purification*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000382:microbiology*; D011014:Pneumonia / Q000382:microbiology*
Neumonéas por gérmenes gram negativos.