Sinus disease and asthma: the problem of foci of infection.
D001249:Asthma / Q000209:etiology*; D005490:Focal Infection; D006801:Humans; D009668:Nose Diseases; D010254:Paranasal Sinus Diseases; D012852:Sinusitis
ASTHMA/etiology and pathogenesis; FOCAL INFECTION; SINUSITIS