Table 2.

Summary of the allergic history of the subjects (n = 24).

History	Positive	Negative	Not available
Immunotherapy	8 (33.3%)	16 (66.7%)	0 (0%)
Food allergy	9 (37.5%)	11 (45.8%)	4 (16.7%)
Environmental allergy	16 (66.7%)	2 (8.3%)	6 (25%)