GA2LEN, the Global Asthma and Allergy European Network, is an international network of allergy and asthma research centers and aims to reduce the burden of allergic diseases and to improve the health of patients with allergic diseases including urticaria. The website features background information on GA2LEN allergy schools and master classes on urticaria, the international urticaria guideline, the global urticaria forum and the network of urticaria centers of excellence and reference (UCAREs).


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