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a Box plot of the percentages of haloes according to respiratory disease. NAR = Nonallergic rhinitis; AR = allergic rhinitis; AS = asthma. b Box plot of the percentages of haloes according to the number of positive extracts. c Box plot of the percentages of haloes if positive to a particular allergen group in the SPT. ∗ Outlier; # p < 0.05.
