American Academy of Asthma, Allergy and Immunology, as well as numerous national committees and sections of the American Academy of Pediatrics) have reviewed and revised the guideline. Three specific issues were considered: 1) evidence for the efficacy of various antibiotics in children; 2) evidence for the efficacy of various ancillary, nonantibiotic regimens; and 3) the diagnostic accuracy and concordance of clinical symptoms, radiography (and other imaging methods), and sinus aspiration.