Jong, N.W. de

allergy pollen allergen patient extract study symptom flower employee greenhouse latex prick reaction result netherland chrysanthemum prevalence chapter skin prick tests apple group asthma cucumeri venom glove peach skin prick test cross-reactivity hazelnut pepper groot h bell pepper pollen bumblebee jong nw immunol bumblebee venom chrysanthemum pollen worker immunotherapy number history pteronyssinu table house complaint rhiniti sensitisation food allergy gerth protein case history inhalant allergens skin tests serum birch method groot sensitization inhalant diagnosis rubber fruit van toorenenbergen mugwort plant work-related symptoms work-related exposure latex allergy family procedure greenhouse workers concentration challenge response control contact honeybee sting rotterdam