Hay fever and month of birth.
D000293:Adolescent; D000485:Allergens; D001249:Asthma / Q000276:immunology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011058:Pollen; D012130:Respiratory Hypersensitivity / Q000276:immunology; D012141:Respiratory Tract Infections / Q000150:complications; D006255:Rhinitis, Allergic, Seasonal / Q000276:immunology*; D012621:Seasons
D000485:Allergens