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Recommended treatment algorithm for urticaria. Source: Zuberbier T, Asero R, Godse K, Grattan C, Maurer M et al. The EAACI/GA2LEN/EDF/WAO Guideline for the definition, classification, diagnosis, and management of urticaria: the 2013 revision and update. Allergy 2014; 69: 868–887
