1. Epidemiology of urticaria: a representative cross-sectional population survey;Zuberbier;Clin Exper Dermatol,2010
2. Diagnosis and treatment of urticaria and angioedema: a worldwide perspective;Sanchez-Borges;WAO J,2012
3. Epidemiology of urticaria in Spain;Gaig;J Invest Allergol Clin Immunol,2004
4. Clinical features and natural history of physical urticaria in children;Kkakoo;Pediatr Allergy Immunol,2008
5. Epidemiology, healthcare, resources, use and clinical features of different types of urticaria. Allergologica 2005;Ferrer;J Investig Allergol Clin Immunol,2009