Letter: More studies with H. influenzae.
D000208:Acute Disease; D001431:Bacteriological Techniques; D006192:Haemophilus Infections / Q000175:diagnosis*; D006193:Haemophilus influenzae; D006801:Humans; D007223:Infant; D011014:Pneumonia / Q000175:diagnosis / Q000209:etiology; D011677:Punctures