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BACKGROUND It is well known that allergen-specific nasal challenge (ASNC) is a fruitful tool with which to evaluate antiallergic activity exerted by a drug. Azelastine is a new antihistamine also(More)
BACKGROUND In children with asthma, discrepancies between objective indicators of airway obstruction and symptom perception are often observed. Although visual analogue scale (VAS) has been proposed(More)