Letter: Mixed bacterial vaccines of questionable value.
D000328:Adult; D001249:Asthma / Q000517:prevention & control; D001424:Bacterial Infections / Q000517:prevention & control*; D001428:Bacterial Vaccines; D002648:Child; D006801:Humans; D007372:Interferons / Q000096:biosynthesis; D008583:Meningitis, Haemophilus / Q000517:prevention & control; D012141:Respiratory Tract Infections / Q000517:prevention & control
D001428:Bacterial Vaccines; D007372:Interferons